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/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved.
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include <assert.h>
#include <stdbool.h>
#include <stddef.h>
#include "config/aom_config.h"
#include "config/aom_scale_rtcd.h"
#include "aom/aom_codec.h"
#include "aom/aom_image.h"
#include "aom/internal/aom_codec_internal.h"
#include "aom_dsp/aom_dsp_common.h"
#include "aom_dsp/binary_codes_reader.h"
#include "aom_dsp/bitreader.h"
#include "aom_dsp/bitreader_buffer.h"
#include "aom_dsp/txfm_common.h"
#include "aom_mem/aom_mem.h"
#include "aom_ports/aom_timer.h"
#include "aom_ports/mem.h"
#include "aom_ports/mem_ops.h"
#include "aom_scale/yv12config.h"
#include "aom_util/aom_pthread.h"
#include "aom_util/aom_thread.h"
#if CONFIG_BITSTREAM_DEBUG || CONFIG_MISMATCH_DEBUG
#include "aom_util/debug_util.h"
#endif // CONFIG_BITSTREAM_DEBUG || CONFIG_MISMATCH_DEBUG
#include "av1/common/alloccommon.h"
#include "av1/common/av1_common_int.h"
#include "av1/common/blockd.h"
#include "av1/common/cdef.h"
#include "av1/common/cfl.h"
#include "av1/common/common_data.h"
#include "av1/common/common.h"
#include "av1/common/entropy.h"
#include "av1/common/entropymode.h"
#include "av1/common/entropymv.h"
#include "av1/common/enums.h"
#include "av1/common/frame_buffers.h"
#include "av1/common/idct.h"
#include "av1/common/mv.h"
#include "av1/common/mvref_common.h"
#include "av1/common/obmc.h"
#include "av1/common/pred_common.h"
#include "av1/common/quant_common.h"
#include "av1/common/reconinter.h"
#include "av1/common/reconintra.h"
#include "av1/common/resize.h"
#include "av1/common/restoration.h"
#include "av1/common/scale.h"
#include "av1/common/seg_common.h"
#include "av1/common/thread_common.h"
#include "av1/common/tile_common.h"
#include "av1/common/warped_motion.h"
#include "av1/decoder/decodeframe.h"
#include "av1/decoder/decodemv.h"
#include "av1/decoder/decoder.h"
#include "av1/decoder/decodetxb.h"
#include "av1/decoder/detokenize.h"
#if CONFIG_INSPECTION
#include "av1/decoder/inspection.h"
#endif
#define ACCT_STR __func__
#define AOM_MIN_THREADS_PER_TILE 1
#define AOM_MAX_THREADS_PER_TILE 2
// This is needed by ext_tile related unit tests.
#define EXT_TILE_DEBUG 1
#define MC_TEMP_BUF_PELS \
(((MAX_SB_SIZE)*2 + (AOM_INTERP_EXTEND)*2) * \
((MAX_SB_SIZE)*2 + (AOM_INTERP_EXTEND)*2))
// Checks that the remaining bits start with a 1 and ends with 0s.
// It consumes an additional byte, if already byte aligned before the check.
int av1_check_trailing_bits(AV1Decoder *pbi, struct aom_read_bit_buffer *rb) {
// bit_offset is set to 0 (mod 8) when the reader is already byte aligned
int bits_before_alignment = 8 - rb->bit_offset % 8;
int trailing = aom_rb_read_literal(rb, bits_before_alignment);
if (trailing != (1 << (bits_before_alignment - 1))) {
pbi->error.error_code = AOM_CODEC_CORRUPT_FRAME;
return -1;
}
return 0;
}
// Use only_chroma = 1 to only set the chroma planes
static inline void set_planes_to_neutral_grey(
const SequenceHeader *const seq_params, const YV12_BUFFER_CONFIG *const buf,
int only_chroma) {
if (seq_params->use_highbitdepth) {
const int val = 1 << (seq_params->bit_depth - 1);
for (int plane = only_chroma; plane < MAX_MB_PLANE; plane++) {
const int is_uv = plane > 0;
uint16_t *const base = CONVERT_TO_SHORTPTR(buf->buffers[plane]);
// Set the first row to neutral grey. Then copy the first row to all
// subsequent rows.
if (buf->crop_heights[is_uv] > 0) {
aom_memset16(base, val, buf->crop_widths[is_uv]);
for (int row_idx = 1; row_idx < buf->crop_heights[is_uv]; row_idx++) {
memcpy(&base[row_idx * buf->strides[is_uv]], base,
sizeof(*base) * buf->crop_widths[is_uv]);
}
}
}
} else {
for (int plane = only_chroma; plane < MAX_MB_PLANE; plane++) {
const int is_uv = plane > 0;
for (int row_idx = 0; row_idx < buf->crop_heights[is_uv]; row_idx++) {
memset(&buf->buffers[plane][row_idx * buf->strides[is_uv]], 1 << 7,
buf->crop_widths[is_uv]);
}
}
}
}
static inline void loop_restoration_read_sb_coeffs(const AV1_COMMON *const cm,
MACROBLOCKD *xd,
aom_reader *const r,
int plane, int runit_idx);
static int read_is_valid(const uint8_t *start, size_t len, const uint8_t *end) {
return len != 0 && len <= (size_t)(end - start);
}
static TX_MODE read_tx_mode(struct aom_read_bit_buffer *rb,
int coded_lossless) {
if (coded_lossless) return ONLY_4X4;
return aom_rb_read_bit(rb) ? TX_MODE_SELECT : TX_MODE_LARGEST;
}
static REFERENCE_MODE read_frame_reference_mode(
const AV1_COMMON *cm, struct aom_read_bit_buffer *rb) {
if (frame_is_intra_only(cm)) {
return SINGLE_REFERENCE;
} else {
return aom_rb_read_bit(rb) ? REFERENCE_MODE_SELECT : SINGLE_REFERENCE;
}
}
static inline void inverse_transform_block(DecoderCodingBlock *dcb, int plane,
const TX_TYPE tx_type,
const TX_SIZE tx_size, uint8_t *dst,
int stride, int reduced_tx_set) {
tran_low_t *const dqcoeff = dcb->dqcoeff_block[plane] + dcb->cb_offset[plane];
eob_info *eob_data = dcb->eob_data[plane] + dcb->txb_offset[plane];
uint16_t scan_line = eob_data->max_scan_line;
uint16_t eob = eob_data->eob;
av1_inverse_transform_block(&dcb->xd, dqcoeff, plane, tx_type, tx_size, dst,
stride, eob, reduced_tx_set);
memset(dqcoeff, 0, (scan_line + 1) * sizeof(dqcoeff[0]));
}
static inline void read_coeffs_tx_intra_block(
const AV1_COMMON *const cm, DecoderCodingBlock *dcb, aom_reader *const r,
const int plane, const int row, const int col, const TX_SIZE tx_size) {
MB_MODE_INFO *mbmi = dcb->xd.mi[0];
if (!mbmi->skip_txfm) {
#if TXCOEFF_TIMER
struct aom_usec_timer timer;
aom_usec_timer_start(&timer);
#endif
av1_read_coeffs_txb(cm, dcb, r, plane, row, col, tx_size);
#if TXCOEFF_TIMER
aom_usec_timer_mark(&timer);
const int64_t elapsed_time = aom_usec_timer_elapsed(&timer);
cm->txcoeff_timer += elapsed_time;
++cm->txb_count;
#endif
}
}
static inline void decode_block_void(const AV1_COMMON *const cm,
DecoderCodingBlock *dcb,
aom_reader *const r, const int plane,
const int row, const int col,
const TX_SIZE tx_size) {
(void)cm;
(void)dcb;
(void)r;
(void)plane;
(void)row;
(void)col;
(void)tx_size;
}
static inline void predict_inter_block_void(AV1_COMMON *const cm,
DecoderCodingBlock *dcb,
BLOCK_SIZE bsize) {
(void)cm;
(void)dcb;
(void)bsize;
}
static inline void cfl_store_inter_block_void(AV1_COMMON *const cm,
MACROBLOCKD *const xd) {
(void)cm;
(void)xd;
}
static inline void predict_and_reconstruct_intra_block(
const AV1_COMMON *const cm, DecoderCodingBlock *dcb, aom_reader *const r,
const int plane, const int row, const int col, const TX_SIZE tx_size) {
(void)r;
MACROBLOCKD *const xd = &dcb->xd;
MB_MODE_INFO *mbmi = xd->mi[0];
PLANE_TYPE plane_type = get_plane_type(plane);
av1_predict_intra_block_facade(cm, xd, plane, col, row, tx_size);
if (!mbmi->skip_txfm) {
eob_info *eob_data = dcb->eob_data[plane] + dcb->txb_offset[plane];
if (eob_data->eob) {
const bool reduced_tx_set_used = cm->features.reduced_tx_set_used;
// tx_type was read out in av1_read_coeffs_txb.
const TX_TYPE tx_type = av1_get_tx_type(xd, plane_type, row, col, tx_size,
reduced_tx_set_used);
struct macroblockd_plane *const pd = &xd->plane[plane];
uint8_t *dst = &pd->dst.buf[(row * pd->dst.stride + col) << MI_SIZE_LOG2];
inverse_transform_block(dcb, plane, tx_type, tx_size, dst, pd->dst.stride,
reduced_tx_set_used);
}
}
if (plane == AOM_PLANE_Y && store_cfl_required(cm, xd)) {
cfl_store_tx(xd, row, col, tx_size, mbmi->bsize);
}
}
static inline void inverse_transform_inter_block(
const AV1_COMMON *const cm, DecoderCodingBlock *dcb, aom_reader *const r,
const int plane, const int blk_row, const int blk_col,
const TX_SIZE tx_size) {
(void)r;
MACROBLOCKD *const xd = &dcb->xd;
PLANE_TYPE plane_type = get_plane_type(plane);
const struct macroblockd_plane *const pd = &xd->plane[plane];
const bool reduced_tx_set_used = cm->features.reduced_tx_set_used;
// tx_type was read out in av1_read_coeffs_txb.
const TX_TYPE tx_type = av1_get_tx_type(xd, plane_type, blk_row, blk_col,
tx_size, reduced_tx_set_used);
uint8_t *dst =
&pd->dst.buf[(blk_row * pd->dst.stride + blk_col) << MI_SIZE_LOG2];
inverse_transform_block(dcb, plane, tx_type, tx_size, dst, pd->dst.stride,
reduced_tx_set_used);
#if CONFIG_MISMATCH_DEBUG
int pixel_c, pixel_r;
BLOCK_SIZE bsize = txsize_to_bsize[tx_size];
int blk_w = block_size_wide[bsize];
int blk_h = block_size_high[bsize];
const int mi_row = -xd->mb_to_top_edge >> (3 + MI_SIZE_LOG2);
const int mi_col = -xd->mb_to_left_edge >> (3 + MI_SIZE_LOG2);
mi_to_pixel_loc(&pixel_c, &pixel_r, mi_col, mi_row, blk_col, blk_row,
pd->subsampling_x, pd->subsampling_y);
mismatch_check_block_tx(dst, pd->dst.stride, cm->current_frame.order_hint,
plane, pixel_c, pixel_r, blk_w, blk_h,
xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH);
#endif
}
static inline void set_cb_buffer_offsets(DecoderCodingBlock *dcb,
TX_SIZE tx_size, int plane) {
dcb->cb_offset[plane] += tx_size_wide[tx_size] * tx_size_high[tx_size];
dcb->txb_offset[plane] =
dcb->cb_offset[plane] / (TX_SIZE_W_MIN * TX_SIZE_H_MIN);
}
static inline void decode_reconstruct_tx(AV1_COMMON *cm, ThreadData *const td,
aom_reader *r,
MB_MODE_INFO *const mbmi, int plane,
BLOCK_SIZE plane_bsize, int blk_row,
int blk_col, int block,
TX_SIZE tx_size, int *eob_total) {
DecoderCodingBlock *const dcb = &td->dcb;
MACROBLOCKD *const xd = &dcb->xd;
const struct macroblockd_plane *const pd = &xd->plane[plane];
const TX_SIZE plane_tx_size =
plane ? av1_get_max_uv_txsize(mbmi->bsize, pd->subsampling_x,
pd->subsampling_y)
: mbmi->inter_tx_size[av1_get_txb_size_index(plane_bsize, blk_row,
blk_col)];
// Scale to match transform block unit.
const int max_blocks_high = max_block_high(xd, plane_bsize, plane);
const int max_blocks_wide = max_block_wide(xd, plane_bsize, plane);
if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide) return;
if (tx_size == plane_tx_size || plane) {
td->read_coeffs_tx_inter_block_visit(cm, dcb, r, plane, blk_row, blk_col,
tx_size);
td->inverse_tx_inter_block_visit(cm, dcb, r, plane, blk_row, blk_col,
tx_size);
eob_info *eob_data = dcb->eob_data[plane] + dcb->txb_offset[plane];
*eob_total += eob_data->eob;
set_cb_buffer_offsets(dcb, tx_size, plane);
} else {
const TX_SIZE sub_txs = sub_tx_size_map[tx_size];
assert(IMPLIES(tx_size <= TX_4X4, sub_txs == tx_size));
assert(IMPLIES(tx_size > TX_4X4, sub_txs < tx_size));
const int bsw = tx_size_wide_unit[sub_txs];
const int bsh = tx_size_high_unit[sub_txs];
const int sub_step = bsw * bsh;
const int row_end =
AOMMIN(tx_size_high_unit[tx_size], max_blocks_high - blk_row);
const int col_end =
AOMMIN(tx_size_wide_unit[tx_size], max_blocks_wide - blk_col);
assert(bsw > 0 && bsh > 0);
for (int row = 0; row < row_end; row += bsh) {
const int offsetr = blk_row + row;
for (int col = 0; col < col_end; col += bsw) {
const int offsetc = blk_col + col;
decode_reconstruct_tx(cm, td, r, mbmi, plane, plane_bsize, offsetr,
offsetc, block, sub_txs, eob_total);
block += sub_step;
}
}
}
}
static inline void set_offsets(AV1_COMMON *const cm, MACROBLOCKD *const xd,
BLOCK_SIZE bsize, int mi_row, int mi_col, int bw,
int bh, int x_mis, int y_mis) {
const int num_planes = av1_num_planes(cm);
const CommonModeInfoParams *const mi_params = &cm->mi_params;
const TileInfo *const tile = &xd->tile;
set_mi_offsets(mi_params, xd, mi_row, mi_col);
xd->mi[0]->bsize = bsize;
#if CONFIG_RD_DEBUG
xd->mi[0]->mi_row = mi_row;
xd->mi[0]->mi_col = mi_col;
#endif
assert(x_mis && y_mis);
for (int x = 1; x < x_mis; ++x) xd->mi[x] = xd->mi[0];
int idx = mi_params->mi_stride;
for (int y = 1; y < y_mis; ++y) {
memcpy(&xd->mi[idx], &xd->mi[0], x_mis * sizeof(xd->mi[0]));
idx += mi_params->mi_stride;
}
set_plane_n4(xd, bw, bh, num_planes);
set_entropy_context(xd, mi_row, mi_col, num_planes);
// Distance of Mb to the various image edges. These are specified to 8th pel
// as they are always compared to values that are in 1/8th pel units
set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, mi_params->mi_rows,
mi_params->mi_cols);
av1_setup_dst_planes(xd->plane, bsize, &cm->cur_frame->buf, mi_row, mi_col, 0,
num_planes);
}
static inline void decode_mbmi_block(AV1Decoder *const pbi,
DecoderCodingBlock *dcb, int mi_row,
int mi_col, aom_reader *r,
PARTITION_TYPE partition,
BLOCK_SIZE bsize) {
AV1_COMMON *const cm = &pbi->common;
const SequenceHeader *const seq_params = cm->seq_params;
const int bw = mi_size_wide[bsize];
const int bh = mi_size_high[bsize];
const int x_mis = AOMMIN(bw, cm->mi_params.mi_cols - mi_col);
const int y_mis = AOMMIN(bh, cm->mi_params.mi_rows - mi_row);
MACROBLOCKD *const xd = &dcb->xd;
#if CONFIG_ACCOUNTING
aom_accounting_set_context(&pbi->accounting, mi_col, mi_row);
#endif
set_offsets(cm, xd, bsize, mi_row, mi_col, bw, bh, x_mis, y_mis);
xd->mi[0]->partition = partition;
av1_read_mode_info(pbi, dcb, r, x_mis, y_mis);
if (bsize >= BLOCK_8X8 &&
(seq_params->subsampling_x || seq_params->subsampling_y)) {
const BLOCK_SIZE uv_subsize =
av1_ss_size_lookup[bsize][seq_params->subsampling_x]
[seq_params->subsampling_y];
if (uv_subsize == BLOCK_INVALID)
aom_internal_error(xd->error_info, AOM_CODEC_CORRUPT_FRAME,
"Invalid block size.");
}
}
typedef struct PadBlock {
int x0;
int x1;
int y0;
int y1;
} PadBlock;
#if CONFIG_AV1_HIGHBITDEPTH
static inline void highbd_build_mc_border(const uint8_t *src8, int src_stride,
uint8_t *dst8, int dst_stride, int x,
int y, int b_w, int b_h, int w,
int h) {
// Get a pointer to the start of the real data for this row.
const uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
const uint16_t *ref_row = src - x - y * src_stride;
if (y >= h)
ref_row += (h - 1) * src_stride;
else if (y > 0)
ref_row += y * src_stride;
do {
int right = 0, copy;
int left = x < 0 ? -x : 0;
if (left > b_w) left = b_w;
if (x + b_w > w) right = x + b_w - w;
if (right > b_w) right = b_w;
copy = b_w - left - right;
if (left) aom_memset16(dst, ref_row[0], left);
if (copy) memcpy(dst + left, ref_row + x + left, copy * sizeof(uint16_t));
if (right) aom_memset16(dst + left + copy, ref_row[w - 1], right);
dst += dst_stride;
++y;
if (y > 0 && y < h) ref_row += src_stride;
} while (--b_h);
}
#endif // CONFIG_AV1_HIGHBITDEPTH
static inline void build_mc_border(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride, int x, int y,
int b_w, int b_h, int w, int h) {
// Get a pointer to the start of the real data for this row.
const uint8_t *ref_row = src - x - y * src_stride;
if (y >= h)
ref_row += (h - 1) * src_stride;
else if (y > 0)
ref_row += y * src_stride;
do {
int right = 0, copy;
int left = x < 0 ? -x : 0;
if (left > b_w) left = b_w;
if (x + b_w > w) right = x + b_w - w;
if (right > b_w) right = b_w;
copy = b_w - left - right;
if (left) memset(dst, ref_row[0], left);
if (copy) memcpy(dst + left, ref_row + x + left, copy);
if (right) memset(dst + left + copy, ref_row[w - 1], right);
dst += dst_stride;
++y;
if (y > 0 && y < h) ref_row += src_stride;
} while (--b_h);
}
static inline int update_extend_mc_border_params(
const struct scale_factors *const sf, struct buf_2d *const pre_buf,
MV32 scaled_mv, PadBlock *block, int subpel_x_mv, int subpel_y_mv,
int do_warp, int is_intrabc, int *x_pad, int *y_pad) {
const int is_scaled = av1_is_scaled(sf);
// Get reference width and height.
int frame_width = pre_buf->width;
int frame_height = pre_buf->height;
// Do border extension if there is motion or
// width/height is not a multiple of 8 pixels.
if ((!is_intrabc) && (!do_warp) &&
(is_scaled || scaled_mv.col || scaled_mv.row || (frame_width & 0x7) ||
(frame_height & 0x7))) {
if (subpel_x_mv || (sf->x_step_q4 != SUBPEL_SHIFTS)) {
block->x0 -= AOM_INTERP_EXTEND - 1;
block->x1 += AOM_INTERP_EXTEND;
*x_pad = 1;
}
if (subpel_y_mv || (sf->y_step_q4 != SUBPEL_SHIFTS)) {
block->y0 -= AOM_INTERP_EXTEND - 1;
block->y1 += AOM_INTERP_EXTEND;
*y_pad = 1;
}
// Skip border extension if block is inside the frame.
if (block->x0 < 0 || block->x1 > frame_width - 1 || block->y0 < 0 ||
block->y1 > frame_height - 1) {
return 1;
}
}
return 0;
}
static inline void extend_mc_border(const struct scale_factors *const sf,
struct buf_2d *const pre_buf,
MV32 scaled_mv, PadBlock block,
int subpel_x_mv, int subpel_y_mv,
int do_warp, int is_intrabc, int highbd,
uint8_t *mc_buf, uint8_t **pre,
int *src_stride) {
int x_pad = 0, y_pad = 0;
if (update_extend_mc_border_params(sf, pre_buf, scaled_mv, &block,
subpel_x_mv, subpel_y_mv, do_warp,
is_intrabc, &x_pad, &y_pad)) {
// Get reference block pointer.
const uint8_t *const buf_ptr =
pre_buf->buf0 + block.y0 * pre_buf->stride + block.x0;
int buf_stride = pre_buf->stride;
const int b_w = block.x1 - block.x0;
const int b_h = block.y1 - block.y0;
#if CONFIG_AV1_HIGHBITDEPTH
// Extend the border.
if (highbd) {
highbd_build_mc_border(buf_ptr, buf_stride, mc_buf, b_w, block.x0,
block.y0, b_w, b_h, pre_buf->width,
pre_buf->height);
} else {
build_mc_border(buf_ptr, buf_stride, mc_buf, b_w, block.x0, block.y0, b_w,
b_h, pre_buf->width, pre_buf->height);
}
#else
(void)highbd;
build_mc_border(buf_ptr, buf_stride, mc_buf, b_w, block.x0, block.y0, b_w,
b_h, pre_buf->width, pre_buf->height);
#endif
*src_stride = b_w;
*pre = mc_buf + y_pad * (AOM_INTERP_EXTEND - 1) * b_w +
x_pad * (AOM_INTERP_EXTEND - 1);
}
}
static inline void dec_calc_subpel_params(
const MV *const src_mv, InterPredParams *const inter_pred_params,
const MACROBLOCKD *const xd, int mi_x, int mi_y, uint8_t **pre,
SubpelParams *subpel_params, int *src_stride, PadBlock *block,
MV32 *scaled_mv, int *subpel_x_mv, int *subpel_y_mv) {
const struct scale_factors *sf = inter_pred_params->scale_factors;
struct buf_2d *pre_buf = &inter_pred_params->ref_frame_buf;
const int bw = inter_pred_params->block_width;
const int bh = inter_pred_params->block_height;
const int is_scaled = av1_is_scaled(sf);
if (is_scaled) {
int ssx = inter_pred_params->subsampling_x;
int ssy = inter_pred_params->subsampling_y;
int orig_pos_y = inter_pred_params->pix_row << SUBPEL_BITS;
orig_pos_y += src_mv->row * (1 << (1 - ssy));
int orig_pos_x = inter_pred_params->pix_col << SUBPEL_BITS;
orig_pos_x += src_mv->col * (1 << (1 - ssx));
int pos_y = av1_scaled_y(orig_pos_y, sf);
int pos_x = av1_scaled_x(orig_pos_x, sf);
pos_x += SCALE_EXTRA_OFF;
pos_y += SCALE_EXTRA_OFF;
const int top = -AOM_LEFT_TOP_MARGIN_SCALED(ssy);
const int left = -AOM_LEFT_TOP_MARGIN_SCALED(ssx);
const int bottom = (pre_buf->height + AOM_INTERP_EXTEND)
<< SCALE_SUBPEL_BITS;
const int right = (pre_buf->width + AOM_INTERP_EXTEND) << SCALE_SUBPEL_BITS;
pos_y = clamp(pos_y, top, bottom);
pos_x = clamp(pos_x, left, right);
subpel_params->subpel_x = pos_x & SCALE_SUBPEL_MASK;
subpel_params->subpel_y = pos_y & SCALE_SUBPEL_MASK;
subpel_params->xs = sf->x_step_q4;
subpel_params->ys = sf->y_step_q4;
// Get reference block top left coordinate.
block->x0 = pos_x >> SCALE_SUBPEL_BITS;
block->y0 = pos_y >> SCALE_SUBPEL_BITS;
// Get reference block bottom right coordinate.
block->x1 =
((pos_x + (bw - 1) * subpel_params->xs) >> SCALE_SUBPEL_BITS) + 1;
block->y1 =
((pos_y + (bh - 1) * subpel_params->ys) >> SCALE_SUBPEL_BITS) + 1;
MV temp_mv;
temp_mv = clamp_mv_to_umv_border_sb(xd, src_mv, bw, bh,
inter_pred_params->subsampling_x,
inter_pred_params->subsampling_y);
*scaled_mv = av1_scale_mv(&temp_mv, mi_x, mi_y, sf);
scaled_mv->row += SCALE_EXTRA_OFF;
scaled_mv->col += SCALE_EXTRA_OFF;
*subpel_x_mv = scaled_mv->col & SCALE_SUBPEL_MASK;
*subpel_y_mv = scaled_mv->row & SCALE_SUBPEL_MASK;
} else {
// Get block position in current frame.
int pos_x = inter_pred_params->pix_col << SUBPEL_BITS;
int pos_y = inter_pred_params->pix_row << SUBPEL_BITS;
const MV mv_q4 = clamp_mv_to_umv_border_sb(
xd, src_mv, bw, bh, inter_pred_params->subsampling_x,
inter_pred_params->subsampling_y);
subpel_params->xs = subpel_params->ys = SCALE_SUBPEL_SHIFTS;
subpel_params->subpel_x = (mv_q4.col & SUBPEL_MASK) << SCALE_EXTRA_BITS;
subpel_params->subpel_y = (mv_q4.row & SUBPEL_MASK) << SCALE_EXTRA_BITS;
// Get reference block top left coordinate.
pos_x += mv_q4.col;
pos_y += mv_q4.row;
block->x0 = pos_x >> SUBPEL_BITS;
block->y0 = pos_y >> SUBPEL_BITS;
// Get reference block bottom right coordinate.
block->x1 = (pos_x >> SUBPEL_BITS) + (bw - 1) + 1;
block->y1 = (pos_y >> SUBPEL_BITS) + (bh - 1) + 1;
scaled_mv->row = mv_q4.row;
scaled_mv->col = mv_q4.col;
*subpel_x_mv = scaled_mv->col & SUBPEL_MASK;
*subpel_y_mv = scaled_mv->row & SUBPEL_MASK;
}
*pre = pre_buf->buf0 + block->y0 * pre_buf->stride + block->x0;
*src_stride = pre_buf->stride;
}
static inline void dec_calc_subpel_params_and_extend(
const MV *const src_mv, InterPredParams *const inter_pred_params,
MACROBLOCKD *const xd, int mi_x, int mi_y, int ref, uint8_t **mc_buf,
uint8_t **pre, SubpelParams *subpel_params, int *src_stride) {
PadBlock block;
MV32 scaled_mv;
int subpel_x_mv, subpel_y_mv;
dec_calc_subpel_params(src_mv, inter_pred_params, xd, mi_x, mi_y, pre,
subpel_params, src_stride, &block, &scaled_mv,
&subpel_x_mv, &subpel_y_mv);
extend_mc_border(
inter_pred_params->scale_factors, &inter_pred_params->ref_frame_buf,
scaled_mv, block, subpel_x_mv, subpel_y_mv,
inter_pred_params->mode == WARP_PRED, inter_pred_params->is_intrabc,
inter_pred_params->use_hbd_buf, mc_buf[ref], pre, src_stride);
}
#define IS_DEC 1
#include "av1/common/reconinter_template.inc"
#undef IS_DEC
static void dec_build_inter_predictors(const AV1_COMMON *cm,
DecoderCodingBlock *dcb, int plane,
const MB_MODE_INFO *mi,
int build_for_obmc, int bw, int bh,
int mi_x, int mi_y) {
build_inter_predictors(cm, &dcb->xd, plane, mi, build_for_obmc, bw, bh, mi_x,
mi_y, dcb->mc_buf);
}
static inline void dec_build_inter_predictor(const AV1_COMMON *cm,
DecoderCodingBlock *dcb,
int mi_row, int mi_col,
BLOCK_SIZE bsize) {
MACROBLOCKD *const xd = &dcb->xd;
const int num_planes = av1_num_planes(cm);
for (int plane = 0; plane < num_planes; ++plane) {
if (plane && !xd->is_chroma_ref) break;
const int mi_x = mi_col * MI_SIZE;
const int mi_y = mi_row * MI_SIZE;
dec_build_inter_predictors(cm, dcb, plane, xd->mi[0], 0,
xd->plane[plane].width, xd->plane[plane].height,
mi_x, mi_y);
if (is_interintra_pred(xd->mi[0])) {
BUFFER_SET ctx = { { xd->plane[0].dst.buf, xd->plane[1].dst.buf,
xd->plane[2].dst.buf },
{ xd->plane[0].dst.stride, xd->plane[1].dst.stride,
xd->plane[2].dst.stride } };
av1_build_interintra_predictor(cm, xd, xd->plane[plane].dst.buf,
xd->plane[plane].dst.stride, &ctx, plane,
bsize);
}
}
}
static inline void dec_build_prediction_by_above_pred(
MACROBLOCKD *const xd, int rel_mi_row, int rel_mi_col, uint8_t op_mi_size,
int dir, MB_MODE_INFO *above_mbmi, void *fun_ctxt, const int num_planes) {
struct build_prediction_ctxt *ctxt = (struct build_prediction_ctxt *)fun_ctxt;
const int above_mi_col = xd->mi_col + rel_mi_col;
int mi_x, mi_y;
MB_MODE_INFO backup_mbmi = *above_mbmi;
(void)rel_mi_row;
(void)dir;
av1_setup_build_prediction_by_above_pred(xd, rel_mi_col, op_mi_size,
&backup_mbmi, ctxt, num_planes);
mi_x = above_mi_col << MI_SIZE_LOG2;
mi_y = xd->mi_row << MI_SIZE_LOG2;
const BLOCK_SIZE bsize = xd->mi[0]->bsize;
for (int j = 0; j < num_planes; ++j) {
const struct macroblockd_plane *pd = &xd->plane[j];
int bw = (op_mi_size * MI_SIZE) >> pd->subsampling_x;
int bh = clamp(block_size_high[bsize] >> (pd->subsampling_y + 1), 4,
block_size_high[BLOCK_64X64] >> (pd->subsampling_y + 1));
if (av1_skip_u4x4_pred_in_obmc(bsize, pd, 0)) continue;
dec_build_inter_predictors(ctxt->cm, (DecoderCodingBlock *)ctxt->dcb, j,
&backup_mbmi, 1, bw, bh, mi_x, mi_y);
}
}
static inline void dec_build_prediction_by_above_preds(
const AV1_COMMON *cm, DecoderCodingBlock *dcb,
uint8_t *tmp_buf[MAX_MB_PLANE], int tmp_width[MAX_MB_PLANE],
int tmp_height[MAX_MB_PLANE], int tmp_stride[MAX_MB_PLANE]) {
MACROBLOCKD *const xd = &dcb->xd;
if (!xd->up_available) return;
// Adjust mb_to_bottom_edge to have the correct value for the OBMC
// prediction block. This is half the height of the original block,
// except for 128-wide blocks, where we only use a height of 32.
const int this_height = xd->height * MI_SIZE;
const int pred_height = AOMMIN(this_height / 2, 32);
xd->mb_to_bottom_edge += GET_MV_SUBPEL(this_height - pred_height);
struct build_prediction_ctxt ctxt = {
cm, tmp_buf, tmp_width, tmp_height, tmp_stride, xd->mb_to_right_edge, dcb
};
const BLOCK_SIZE bsize = xd->mi[0]->bsize;
foreach_overlappable_nb_above(cm, xd,
max_neighbor_obmc[mi_size_wide_log2[bsize]],
dec_build_prediction_by_above_pred, &ctxt);
xd->mb_to_left_edge = -GET_MV_SUBPEL(xd->mi_col * MI_SIZE);
xd->mb_to_right_edge = ctxt.mb_to_far_edge;
xd->mb_to_bottom_edge -= GET_MV_SUBPEL(this_height - pred_height);
}
static inline void dec_build_prediction_by_left_pred(
MACROBLOCKD *const xd, int rel_mi_row, int rel_mi_col, uint8_t op_mi_size,
int dir, MB_MODE_INFO *left_mbmi, void *fun_ctxt, const int num_planes) {
struct build_prediction_ctxt *ctxt = (struct build_prediction_ctxt *)fun_ctxt;
const int left_mi_row = xd->mi_row + rel_mi_row;
int mi_x, mi_y;
MB_MODE_INFO backup_mbmi = *left_mbmi;
(void)rel_mi_col;
(void)dir;
av1_setup_build_prediction_by_left_pred(xd, rel_mi_row, op_mi_size,
&backup_mbmi, ctxt, num_planes);
mi_x = xd->mi_col << MI_SIZE_LOG2;
mi_y = left_mi_row << MI_SIZE_LOG2;
const BLOCK_SIZE bsize = xd->mi[0]->bsize;
for (int j = 0; j < num_planes; ++j) {
const struct macroblockd_plane *pd = &xd->plane[j];
int bw = clamp(block_size_wide[bsize] >> (pd->subsampling_x + 1), 4,
block_size_wide[BLOCK_64X64] >> (pd->subsampling_x + 1));
int bh = (op_mi_size << MI_SIZE_LOG2) >> pd->subsampling_y;
if (av1_skip_u4x4_pred_in_obmc(bsize, pd, 1)) continue;
dec_build_inter_predictors(ctxt->cm, (DecoderCodingBlock *)ctxt->dcb, j,
&backup_mbmi, 1, bw, bh, mi_x, mi_y);
}
}
static inline void dec_build_prediction_by_left_preds(
const AV1_COMMON *cm, DecoderCodingBlock *dcb,
uint8_t *tmp_buf[MAX_MB_PLANE], int tmp_width[MAX_MB_PLANE],
int tmp_height[MAX_MB_PLANE], int tmp_stride[MAX_MB_PLANE]) {
MACROBLOCKD *const xd = &dcb->xd;
if (!xd->left_available) return;
// Adjust mb_to_right_edge to have the correct value for the OBMC
// prediction block. This is half the width of the original block,
// except for 128-wide blocks, where we only use a width of 32.
const int this_width = xd->width * MI_SIZE;
const int pred_width = AOMMIN(this_width / 2, 32);
xd->mb_to_right_edge += GET_MV_SUBPEL(this_width - pred_width);
struct build_prediction_ctxt ctxt = {
cm, tmp_buf, tmp_width, tmp_height, tmp_stride, xd->mb_to_bottom_edge, dcb
};
const BLOCK_SIZE bsize = xd->mi[0]->bsize;
foreach_overlappable_nb_left(cm, xd,
max_neighbor_obmc[mi_size_high_log2[bsize]],
dec_build_prediction_by_left_pred, &ctxt);
xd->mb_to_top_edge = -GET_MV_SUBPEL(xd->mi_row * MI_SIZE);
xd->mb_to_right_edge -= GET_MV_SUBPEL(this_width - pred_width);
xd->mb_to_bottom_edge = ctxt.mb_to_far_edge;
}
static inline void dec_build_obmc_inter_predictors_sb(const AV1_COMMON *cm,
DecoderCodingBlock *dcb) {
const int num_planes = av1_num_planes(cm);
uint8_t *dst_buf1[MAX_MB_PLANE], *dst_buf2[MAX_MB_PLANE];
int dst_stride1[MAX_MB_PLANE] = { MAX_SB_SIZE, MAX_SB_SIZE, MAX_SB_SIZE };
int dst_stride2[MAX_MB_PLANE] = { MAX_SB_SIZE, MAX_SB_SIZE, MAX_SB_SIZE };
int dst_width1[MAX_MB_PLANE] = { MAX_SB_SIZE, MAX_SB_SIZE, MAX_SB_SIZE };
int dst_width2[MAX_MB_PLANE] = { MAX_SB_SIZE, MAX_SB_SIZE, MAX_SB_SIZE };
int dst_height1[MAX_MB_PLANE] = { MAX_SB_SIZE, MAX_SB_SIZE, MAX_SB_SIZE };
int dst_height2[MAX_MB_PLANE] = { MAX_SB_SIZE, MAX_SB_SIZE, MAX_SB_SIZE };
MACROBLOCKD *const xd = &dcb->xd;
av1_setup_obmc_dst_bufs(xd, dst_buf1, dst_buf2);
dec_build_prediction_by_above_preds(cm, dcb, dst_buf1, dst_width1,
dst_height1, dst_stride1);
dec_build_prediction_by_left_preds(cm, dcb, dst_buf2, dst_width2, dst_height2,
dst_stride2);
const int mi_row = xd->mi_row;
const int mi_col = xd->mi_col;
av1_setup_dst_planes(xd->plane, xd->mi[0]->bsize, &cm->cur_frame->buf, mi_row,
mi_col, 0, num_planes);
av1_build_obmc_inter_prediction(cm, xd, dst_buf1, dst_stride1, dst_buf2,
dst_stride2);
}
static inline void cfl_store_inter_block(AV1_COMMON *const cm,
MACROBLOCKD *const xd) {
MB_MODE_INFO *mbmi = xd->mi[0];
if (store_cfl_required(cm, xd)) {
cfl_store_block(xd, mbmi->bsize, mbmi->tx_size);
}
}
static inline void predict_inter_block(AV1_COMMON *const cm,
DecoderCodingBlock *dcb,
BLOCK_SIZE bsize) {
MACROBLOCKD *const xd = &dcb->xd;
MB_MODE_INFO *mbmi = xd->mi[0];
const int num_planes = av1_num_planes(cm);
const int mi_row = xd->mi_row;
const int mi_col = xd->mi_col;
for (int ref = 0; ref < 1 + has_second_ref(mbmi); ++ref) {
const MV_REFERENCE_FRAME frame = mbmi->ref_frame[ref];
if (frame < LAST_FRAME) {
assert(is_intrabc_block(mbmi));
assert(frame == INTRA_FRAME);
assert(ref == 0);
} else {
const RefCntBuffer *ref_buf = get_ref_frame_buf(cm, frame);
const struct scale_factors *ref_scale_factors =
get_ref_scale_factors_const(cm, frame);
xd->block_ref_scale_factors[ref] = ref_scale_factors;
av1_setup_pre_planes(xd, ref, &ref_buf->buf, mi_row, mi_col,
ref_scale_factors, num_planes);
}
}
dec_build_inter_predictor(cm, dcb, mi_row, mi_col, bsize);
if (mbmi->motion_mode == OBMC_CAUSAL) {
dec_build_obmc_inter_predictors_sb(cm, dcb);
}
#if CONFIG_MISMATCH_DEBUG
for (int plane = 0; plane < num_planes; ++plane) {
const struct macroblockd_plane *pd = &xd->plane[plane];
int pixel_c, pixel_r;
mi_to_pixel_loc(&pixel_c, &pixel_r, mi_col, mi_row, 0, 0, pd->subsampling_x,
pd->subsampling_y);
if (!is_chroma_reference(mi_row, mi_col, bsize, pd->subsampling_x,
pd->subsampling_y))
continue;
mismatch_check_block_pre(pd->dst.buf, pd->dst.stride,
cm->current_frame.order_hint, plane, pixel_c,
pixel_r, pd->width, pd->height,
xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH);
}
#endif
}
static inline void set_color_index_map_offset(MACROBLOCKD *const xd, int plane,
aom_reader *r) {
(void)r;
Av1ColorMapParam params;
const MB_MODE_INFO *const mbmi = xd->mi[0];
av1_get_block_dimensions(mbmi->bsize, plane, xd, ¶ms.plane_width,
¶ms.plane_height, NULL, NULL);
xd->color_index_map_offset[plane] += params.plane_width * params.plane_height;
}
static inline void decode_token_recon_block(AV1Decoder *const pbi,
ThreadData *const td, aom_reader *r,
BLOCK_SIZE bsize) {
AV1_COMMON *const cm = &pbi->common;
DecoderCodingBlock *const dcb = &td->dcb;
MACROBLOCKD *const xd = &dcb->xd;
const int num_planes = av1_num_planes(cm);
MB_MODE_INFO *mbmi = xd->mi[0];
if (!is_inter_block(mbmi)) {
int row, col;
assert(bsize == get_plane_block_size(bsize, xd->plane[0].subsampling_x,
xd->plane[0].subsampling_y));
const int max_blocks_wide = max_block_wide(xd, bsize, 0);
const int max_blocks_high = max_block_high(xd, bsize, 0);
const BLOCK_SIZE max_unit_bsize = BLOCK_64X64;
int mu_blocks_wide = mi_size_wide[max_unit_bsize];
int mu_blocks_high = mi_size_high[max_unit_bsize];
mu_blocks_wide = AOMMIN(max_blocks_wide, mu_blocks_wide);
mu_blocks_high = AOMMIN(max_blocks_high, mu_blocks_high);
for (row = 0; row < max_blocks_high; row += mu_blocks_high) {
for (col = 0; col < max_blocks_wide; col += mu_blocks_wide) {
for (int plane = 0; plane < num_planes; ++plane) {
if (plane && !xd->is_chroma_ref) break;
const struct macroblockd_plane *const pd = &xd->plane[plane];
const TX_SIZE tx_size = av1_get_tx_size(plane, xd);
const int stepr = tx_size_high_unit[tx_size];
const int stepc = tx_size_wide_unit[tx_size];
const int unit_height = ROUND_POWER_OF_TWO(
AOMMIN(mu_blocks_high + row, max_blocks_high), pd->subsampling_y);
const int unit_width = ROUND_POWER_OF_TWO(
AOMMIN(mu_blocks_wide + col, max_blocks_wide), pd->subsampling_x);
for (int blk_row = row >> pd->subsampling_y; blk_row < unit_height;
blk_row += stepr) {
for (int blk_col = col >> pd->subsampling_x; blk_col < unit_width;
blk_col += stepc) {
td->read_coeffs_tx_intra_block_visit(cm, dcb, r, plane, blk_row,
blk_col, tx_size);
td->predict_and_recon_intra_block_visit(
cm, dcb, r, plane, blk_row, blk_col, tx_size);
set_cb_buffer_offsets(dcb, tx_size, plane);
}
}
}
}
}
} else {
td->predict_inter_block_visit(cm, dcb, bsize);
// Reconstruction
if (!mbmi->skip_txfm) {
int eobtotal = 0;
const int max_blocks_wide = max_block_wide(xd, bsize, 0);
const int max_blocks_high = max_block_high(xd, bsize, 0);
int row, col;
const BLOCK_SIZE max_unit_bsize = BLOCK_64X64;
assert(max_unit_bsize ==
get_plane_block_size(BLOCK_64X64, xd->plane[0].subsampling_x,
xd->plane[0].subsampling_y));
int mu_blocks_wide = mi_size_wide[max_unit_bsize];
int mu_blocks_high = mi_size_high[max_unit_bsize];
mu_blocks_wide = AOMMIN(max_blocks_wide, mu_blocks_wide);
mu_blocks_high = AOMMIN(max_blocks_high, mu_blocks_high);
for (row = 0; row < max_blocks_high; row += mu_blocks_high) {
for (col = 0; col < max_blocks_wide; col += mu_blocks_wide) {
for (int plane = 0; plane < num_planes; ++plane) {
if (plane && !xd->is_chroma_ref) break;
const struct macroblockd_plane *const pd = &xd->plane[plane];
const int ss_x = pd->subsampling_x;
const int ss_y = pd->subsampling_y;
const BLOCK_SIZE plane_bsize =
get_plane_block_size(bsize, ss_x, ss_y);
const TX_SIZE max_tx_size =
get_vartx_max_txsize(xd, plane_bsize, plane);
const int bh_var_tx = tx_size_high_unit[max_tx_size];
const int bw_var_tx = tx_size_wide_unit[max_tx_size];
int block = 0;
int step =
tx_size_wide_unit[max_tx_size] * tx_size_high_unit[max_tx_size];
int blk_row, blk_col;
const int unit_height = ROUND_POWER_OF_TWO(
AOMMIN(mu_blocks_high + row, max_blocks_high), ss_y);
const int unit_width = ROUND_POWER_OF_TWO(
AOMMIN(mu_blocks_wide + col, max_blocks_wide), ss_x);
for (blk_row = row >> ss_y; blk_row < unit_height;
blk_row += bh_var_tx) {
for (blk_col = col >> ss_x; blk_col < unit_width;
blk_col += bw_var_tx) {
decode_reconstruct_tx(cm, td, r, mbmi, plane, plane_bsize,
blk_row, blk_col, block, max_tx_size,
&eobtotal);
block += step;
}
}
}
}
}
}
td->cfl_store_inter_block_visit(cm, xd);
}
av1_visit_palette(pbi, xd, r, set_color_index_map_offset);
}
static inline void set_inter_tx_size(MB_MODE_INFO *mbmi, int stride_log2,
int tx_w_log2, int tx_h_log2, int min_txs,
int split_size, int txs, int blk_row,
int blk_col) {
for (int idy = 0; idy < tx_size_high_unit[split_size];
idy += tx_size_high_unit[min_txs]) {
for (int idx = 0; idx < tx_size_wide_unit[split_size];
idx += tx_size_wide_unit[min_txs]) {
const int index = (((blk_row + idy) >> tx_h_log2) << stride_log2) +
((blk_col + idx) >> tx_w_log2);
mbmi->inter_tx_size[index] = txs;
}
}
}
static inline void read_tx_size_vartx(MACROBLOCKD *xd, MB_MODE_INFO *mbmi,
TX_SIZE tx_size, int depth, int blk_row,
int blk_col, aom_reader *r) {
FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
int is_split = 0;
const BLOCK_SIZE bsize = mbmi->bsize;
const int max_blocks_high = max_block_high(xd, bsize, 0);
const int max_blocks_wide = max_block_wide(xd, bsize, 0);
if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide) return;
assert(tx_size > TX_4X4);
TX_SIZE txs = max_txsize_rect_lookup[bsize];
for (int level = 0; level < MAX_VARTX_DEPTH - 1; ++level)
txs = sub_tx_size_map[txs];
const int tx_w_log2 = tx_size_wide_log2[txs] - MI_SIZE_LOG2;
const int tx_h_log2 = tx_size_high_log2[txs] - MI_SIZE_LOG2;
const int bw_log2 = mi_size_wide_log2[bsize];
const int stride_log2 = bw_log2 - tx_w_log2;
if (depth == MAX_VARTX_DEPTH) {
set_inter_tx_size(mbmi, stride_log2, tx_w_log2, tx_h_log2, txs, tx_size,
tx_size, blk_row, blk_col);
mbmi->tx_size = tx_size;
txfm_partition_update(xd->above_txfm_context + blk_col,
xd->left_txfm_context + blk_row, tx_size, tx_size);
return;
}
const int ctx = txfm_partition_context(xd->above_txfm_context + blk_col,
xd->left_txfm_context + blk_row,
mbmi->bsize, tx_size);
is_split = aom_read_symbol(r, ec_ctx->txfm_partition_cdf[ctx], 2, ACCT_STR);
if (is_split) {
const TX_SIZE sub_txs = sub_tx_size_map[tx_size];
const int bsw = tx_size_wide_unit[sub_txs];
const int bsh = tx_size_high_unit[sub_txs];
if (sub_txs == TX_4X4) {
set_inter_tx_size(mbmi, stride_log2, tx_w_log2, tx_h_log2, txs, tx_size,
sub_txs, blk_row, blk_col);
mbmi->tx_size = sub_txs;
txfm_partition_update(xd->above_txfm_context + blk_col,
xd->left_txfm_context + blk_row, sub_txs, tx_size);
return;
}
assert(bsw > 0 && bsh > 0);
for (int row = 0; row < tx_size_high_unit[tx_size]; row += bsh) {
for (int col = 0; col < tx_size_wide_unit[tx_size]; col += bsw) {
int offsetr = blk_row + row;
int offsetc = blk_col + col;
read_tx_size_vartx(xd, mbmi, sub_txs, depth + 1, offsetr, offsetc, r);
}
}
} else {
set_inter_tx_size(mbmi, stride_log2, tx_w_log2, tx_h_log2, txs, tx_size,
tx_size, blk_row, blk_col);
mbmi->tx_size = tx_size;
txfm_partition_update(xd->above_txfm_context + blk_col,
xd->left_txfm_context + blk_row, tx_size, tx_size);
}
}
static TX_SIZE read_selected_tx_size(const MACROBLOCKD *const xd,
aom_reader *r) {
// TODO(debargha): Clean up the logic here. This function should only
// be called for intra.
const BLOCK_SIZE bsize = xd->mi[0]->bsize;
const int32_t tx_size_cat = bsize_to_tx_size_cat(bsize);
const int max_depths = bsize_to_max_depth(bsize);
const int ctx = get_tx_size_context(xd);
FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
const int depth = aom_read_symbol(r, ec_ctx->tx_size_cdf[tx_size_cat][ctx],
max_depths + 1, ACCT_STR);
assert(depth >= 0 && depth <= max_depths);
const TX_SIZE tx_size = depth_to_tx_size(depth, bsize);
return tx_size;
}
static TX_SIZE read_tx_size(const MACROBLOCKD *const xd, TX_MODE tx_mode,
int is_inter, int allow_select_inter,
aom_reader *r) {
const BLOCK_SIZE bsize = xd->mi[0]->bsize;
if (xd->lossless[xd->mi[0]->segment_id]) return TX_4X4;
if (block_signals_txsize(bsize)) {
if ((!is_inter || allow_select_inter) && tx_mode == TX_MODE_SELECT) {
const TX_SIZE coded_tx_size = read_selected_tx_size(xd, r);
return coded_tx_size;
} else {
return tx_size_from_tx_mode(bsize, tx_mode);
}
} else {
assert(IMPLIES(tx_mode == ONLY_4X4, bsize == BLOCK_4X4));
return max_txsize_rect_lookup[bsize];
}
}
static inline void parse_decode_block(AV1Decoder *const pbi,
ThreadData *const td, int mi_row,
int mi_col, aom_reader *r,
PARTITION_TYPE partition,
BLOCK_SIZE bsize) {
DecoderCodingBlock *const dcb = &td->dcb;
MACROBLOCKD *const xd = &dcb->xd;
decode_mbmi_block(pbi, dcb, mi_row, mi_col, r, partition, bsize);
av1_visit_palette(pbi, xd, r, av1_decode_palette_tokens);
AV1_COMMON *cm = &pbi->common;
const int num_planes = av1_num_planes(cm);
MB_MODE_INFO *mbmi = xd->mi[0];
int inter_block_tx = is_inter_block(mbmi) || is_intrabc_block(mbmi);
if (cm->features.tx_mode == TX_MODE_SELECT && block_signals_txsize(bsize) &&
!mbmi->skip_txfm && inter_block_tx && !xd->lossless[mbmi->segment_id]) {
const TX_SIZE max_tx_size = max_txsize_rect_lookup[bsize];
const int bh = tx_size_high_unit[max_tx_size];
const int bw = tx_size_wide_unit[max_tx_size];
const int width = mi_size_wide[bsize];
const int height = mi_size_high[bsize];
for (int idy = 0; idy < height; idy += bh)
for (int idx = 0; idx < width; idx += bw)
read_tx_size_vartx(xd, mbmi, max_tx_size, 0, idy, idx, r);
} else {
mbmi->tx_size = read_tx_size(xd, cm->features.tx_mode, inter_block_tx,
!mbmi->skip_txfm, r);
if (inter_block_tx)
memset(mbmi->inter_tx_size, mbmi->tx_size, sizeof(mbmi->inter_tx_size));
set_txfm_ctxs(mbmi->tx_size, xd->width, xd->height,
mbmi->skip_txfm && is_inter_block(mbmi), xd);
}
if (cm->delta_q_info.delta_q_present_flag) {
for (int i = 0; i < MAX_SEGMENTS; i++) {
const int current_qindex =
av1_get_qindex(&cm->seg, i, xd->current_base_qindex);
const CommonQuantParams *const quant_params = &cm->quant_params;
for (int j = 0; j < num_planes; ++j) {
const int dc_delta_q = j == 0 ? quant_params->y_dc_delta_q
: (j == 1 ? quant_params->u_dc_delta_q
: quant_params->v_dc_delta_q);
const int ac_delta_q = j == 0 ? 0
: (j == 1 ? quant_params->u_ac_delta_q
: quant_params->v_ac_delta_q);
xd->plane[j].seg_dequant_QTX[i][0] = av1_dc_quant_QTX(
current_qindex, dc_delta_q, cm->seq_params->bit_depth);
xd->plane[j].seg_dequant_QTX[i][1] = av1_ac_quant_QTX(
current_qindex, ac_delta_q, cm->seq_params->bit_depth);
}
}
}
if (mbmi->skip_txfm) av1_reset_entropy_context(xd, bsize, num_planes);
decode_token_recon_block(pbi, td, r, bsize);
}
static inline void set_offsets_for_pred_and_recon(AV1Decoder *const pbi,
ThreadData *const td,
int mi_row, int mi_col,
BLOCK_SIZE bsize) {
AV1_COMMON *const cm = &pbi->common;
const CommonModeInfoParams *const mi_params = &cm->mi_params;
DecoderCodingBlock *const dcb = &td->dcb;
MACROBLOCKD *const xd = &dcb->xd;
const int bw = mi_size_wide[bsize];
const int bh = mi_size_high[bsize];
const int num_planes = av1_num_planes(cm);
const int offset = mi_row * mi_params->mi_stride + mi_col;
const TileInfo *const tile = &xd->tile;
xd->mi = mi_params->mi_grid_base + offset;
xd->tx_type_map =
&mi_params->tx_type_map[mi_row * mi_params->mi_stride + mi_col];
xd->tx_type_map_stride = mi_params->mi_stride;
set_plane_n4(xd, bw, bh, num_planes);
// Distance of Mb to the various image edges. These are specified to 8th pel
// as they are always compared to values that are in 1/8th pel units
set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, mi_params->mi_rows,
mi_params->mi_cols);
av1_setup_dst_planes(xd->plane, bsize, &cm->cur_frame->buf, mi_row, mi_col, 0,
num_planes);
}
static inline void decode_block(AV1Decoder *const pbi, ThreadData *const td,
int mi_row, int mi_col, aom_reader *r,
PARTITION_TYPE partition, BLOCK_SIZE bsize) {
(void)partition;
set_offsets_for_pred_and_recon(pbi, td, mi_row, mi_col, bsize);
decode_token_recon_block(pbi, td, r, bsize);
}
static PARTITION_TYPE read_partition(MACROBLOCKD *xd, int mi_row, int mi_col,
aom_reader *r, int has_rows, int has_cols,
BLOCK_SIZE bsize) {
const int ctx = partition_plane_context(xd, mi_row, mi_col, bsize);
FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
if (!has_rows && !has_cols) return PARTITION_SPLIT;
assert(ctx >= 0);
aom_cdf_prob *partition_cdf = ec_ctx->partition_cdf[ctx];
if (has_rows && has_cols) {
return (PARTITION_TYPE)aom_read_symbol(
r, partition_cdf, partition_cdf_length(bsize), ACCT_STR);
} else if (!has_rows && has_cols) {
assert(bsize > BLOCK_8X8);
aom_cdf_prob cdf[2];
partition_gather_vert_alike(cdf, partition_cdf, bsize);
assert(cdf[1] == AOM_ICDF(CDF_PROB_TOP));
return aom_read_cdf(r, cdf, 2, ACCT_STR) ? PARTITION_SPLIT : PARTITION_HORZ;
} else {
assert(has_rows && !has_cols);
assert(bsize > BLOCK_8X8);
aom_cdf_prob cdf[2];
partition_gather_horz_alike(cdf, partition_cdf, bsize);
assert(cdf[1] == AOM_ICDF(CDF_PROB_TOP));
return aom_read_cdf(r, cdf, 2, ACCT_STR) ? PARTITION_SPLIT : PARTITION_VERT;
}
}
// TODO(slavarnway): eliminate bsize and subsize in future commits
static inline void decode_partition(AV1Decoder *const pbi, ThreadData *const td,
int mi_row, int mi_col, aom_reader *reader,
BLOCK_SIZE bsize, int parse_decode_flag) {
assert(bsize < BLOCK_SIZES_ALL);
AV1_COMMON *const cm = &pbi->common;
DecoderCodingBlock *const dcb = &td->dcb;
MACROBLOCKD *const xd = &dcb->xd;
const int bw = mi_size_wide[bsize];
const int hbs = bw >> 1;
PARTITION_TYPE partition;
BLOCK_SIZE subsize;
const int quarter_step = bw / 4;
BLOCK_SIZE bsize2 = get_partition_subsize(bsize, PARTITION_SPLIT);
const int has_rows = (mi_row + hbs) < cm->mi_params.mi_rows;
const int has_cols = (mi_col + hbs) < cm->mi_params.mi_cols;
if (mi_row >= cm->mi_params.mi_rows || mi_col >= cm->mi_params.mi_cols)
return;
// parse_decode_flag takes the following values :
// 01 - do parse only
// 10 - do decode only
// 11 - do parse and decode
static const block_visitor_fn_t block_visit[4] = { NULL, parse_decode_block,
decode_block,
parse_decode_block };
if (parse_decode_flag & 1) {
const int num_planes = av1_num_planes(cm);
for (int plane = 0; plane < num_planes; ++plane) {
int rcol0, rcol1, rrow0, rrow1;
// Skip some unnecessary work if loop restoration is disabled
if (cm->rst_info[plane].frame_restoration_type == RESTORE_NONE) continue;
if (av1_loop_restoration_corners_in_sb(cm, plane, mi_row, mi_col, bsize,
&rcol0, &rcol1, &rrow0, &rrow1)) {
const int rstride = cm->rst_info[plane].horz_units;
for (int rrow = rrow0; rrow < rrow1; ++rrow) {
for (int rcol = rcol0; rcol < rcol1; ++rcol) {
const int runit_idx = rcol + rrow * rstride;
loop_restoration_read_sb_coeffs(cm, xd, reader, plane, runit_idx);
}
}
}
}
partition = (bsize < BLOCK_8X8) ? PARTITION_NONE
: read_partition(xd, mi_row, mi_col, reader,
has_rows, has_cols, bsize);
} else {
partition = get_partition(cm, mi_row, mi_col, bsize);
}
subsize = get_partition_subsize(bsize, partition);
if (subsize == BLOCK_INVALID) {
// When an internal error occurs ensure that xd->mi_row is set appropriately
// w.r.t. current tile, which is used to signal processing of current row is
// done.
xd->mi_row = mi_row;
aom_internal_error(xd->error_info, AOM_CODEC_CORRUPT_FRAME,
"Partition is invalid for block size %dx%d",
block_size_wide[bsize], block_size_high[bsize]);
}
// Check the bitstream is conformant: if there is subsampling on the
// chroma planes, subsize must subsample to a valid block size.
const struct macroblockd_plane *const pd_u = &xd->plane[1];
if (get_plane_block_size(subsize, pd_u->subsampling_x, pd_u->subsampling_y) ==
BLOCK_INVALID) {
// When an internal error occurs ensure that xd->mi_row is set appropriately
// w.r.t. current tile, which is used to signal processing of current row is
// done.
xd->mi_row = mi_row;
aom_internal_error(xd->error_info, AOM_CODEC_CORRUPT_FRAME,
"Block size %dx%d invalid with this subsampling mode",
block_size_wide[subsize], block_size_high[subsize]);
}
#define DEC_BLOCK_STX_ARG
#define DEC_BLOCK_EPT_ARG partition,
#define DEC_BLOCK(db_r, db_c, db_subsize) \
block_visit[parse_decode_flag](pbi, td, DEC_BLOCK_STX_ARG(db_r), (db_c), \
reader, DEC_BLOCK_EPT_ARG(db_subsize))
#define DEC_PARTITION(db_r, db_c, db_subsize) \
decode_partition(pbi, td, DEC_BLOCK_STX_ARG(db_r), (db_c), reader, \
(db_subsize), parse_decode_flag)
switch (partition) {
case PARTITION_NONE: DEC_BLOCK(mi_row, mi_col, subsize); break;
case PARTITION_HORZ:
DEC_BLOCK(mi_row, mi_col, subsize);
if (has_rows) DEC_BLOCK(mi_row + hbs, mi_col, subsize);
break;
case PARTITION_VERT:
DEC_BLOCK(mi_row, mi_col, subsize);
if (has_cols) DEC_BLOCK(mi_row, mi_col + hbs, subsize);
break;
case PARTITION_SPLIT:
DEC_PARTITION(mi_row, mi_col, subsize);
DEC_PARTITION(mi_row, mi_col + hbs, subsize);
DEC_PARTITION(mi_row + hbs, mi_col, subsize);
DEC_PARTITION(mi_row + hbs, mi_col + hbs, subsize);
break;
case PARTITION_HORZ_A:
DEC_BLOCK(mi_row, mi_col, bsize2);
DEC_BLOCK(mi_row, mi_col + hbs, bsize2);
DEC_BLOCK(mi_row + hbs, mi_col, subsize);
break;
case PARTITION_HORZ_B:
DEC_BLOCK(mi_row, mi_col, subsize);
DEC_BLOCK(mi_row + hbs, mi_col, bsize2);
DEC_BLOCK(mi_row + hbs, mi_col + hbs, bsize2);
break;
case PARTITION_VERT_A:
DEC_BLOCK(mi_row, mi_col, bsize2);
DEC_BLOCK(mi_row + hbs, mi_col, bsize2);
DEC_BLOCK(mi_row, mi_col + hbs, subsize);
break;
case PARTITION_VERT_B:
DEC_BLOCK(mi_row, mi_col, subsize);
DEC_BLOCK(mi_row, mi_col + hbs, bsize2);
DEC_BLOCK(mi_row + hbs, mi_col + hbs, bsize2);
break;
case PARTITION_HORZ_4:
for (int i = 0; i < 4; ++i) {
int this_mi_row = mi_row + i * quarter_step;
if (i > 0 && this_mi_row >= cm->mi_params.mi_rows) break;
DEC_BLOCK(this_mi_row, mi_col, subsize);
}
break;
case PARTITION_VERT_4:
for (int i = 0; i < 4; ++i) {
int this_mi_col = mi_col + i * quarter_step;
if (i > 0 && this_mi_col >= cm->mi_params.mi_cols) break;
DEC_BLOCK(mi_row, this_mi_col, subsize);
}
break;
default: assert(0 && "Invalid partition type");
}
#undef DEC_PARTITION
#undef DEC_BLOCK
#undef DEC_BLOCK_EPT_ARG
#undef DEC_BLOCK_STX_ARG
if (parse_decode_flag & 1)
update_ext_partition_context(xd, mi_row, mi_col, subsize, bsize, partition);
}
static inline void setup_bool_decoder(
MACROBLOCKD *const xd, const uint8_t *data, const uint8_t *data_end,
const size_t read_size, struct aom_internal_error_info *error_info,
aom_reader *r, uint8_t allow_update_cdf) {
// Validate the calculated partition length. If the buffer
// described by the partition can't be fully read, then restrict
// it to the portion that can be (for EC mode) or throw an error.
if (!read_is_valid(data, read_size, data_end)) {
// When internal error occurs ensure that xd->mi_row is set appropriately
// w.r.t. current tile, which is used to signal processing of current row is
// done in row-mt decoding.
xd->mi_row = xd->tile.mi_row_start;
aom_internal_error(error_info, AOM_CODEC_CORRUPT_FRAME,
"Truncated packet or corrupt tile length");
}
if (aom_reader_init(r, data, read_size)) {
// When internal error occurs ensure that xd->mi_row is set appropriately
// w.r.t. current tile, which is used to signal processing of current row is
// done in row-mt decoding.
xd->mi_row = xd->tile.mi_row_start;
aom_internal_error(error_info, AOM_CODEC_MEM_ERROR,
"Failed to allocate bool decoder %d", 1);
}
r->allow_update_cdf = allow_update_cdf;
}
static inline void setup_segmentation(AV1_COMMON *const cm,
struct aom_read_bit_buffer *rb) {
struct segmentation *const seg = &cm->seg;
seg->update_map = 0;
seg->update_data = 0;
seg->temporal_update = 0;
seg->enabled = aom_rb_read_bit(rb);
if (!seg->enabled) {
if (cm->cur_frame->seg_map) {
memset(cm->cur_frame->seg_map, 0,
(cm->cur_frame->mi_rows * cm->cur_frame->mi_cols));
}
memset(seg, 0, sizeof(*seg));
segfeatures_copy(&cm->cur_frame->seg, seg);
return;
}
if (cm->seg.enabled && cm->prev_frame &&
(cm->mi_params.mi_rows == cm->prev_frame->mi_rows) &&
(cm->mi_params.mi_cols == cm->prev_frame->mi_cols)) {
cm->last_frame_seg_map = cm->prev_frame->seg_map;
} else {
cm->last_frame_seg_map = NULL;
}
// Read update flags
if (cm->features.primary_ref_frame == PRIMARY_REF_NONE) {
// These frames can't use previous frames, so must signal map + features
seg->update_map = 1;
seg->temporal_update = 0;
seg->update_data = 1;
} else {
seg->update_map = aom_rb_read_bit(rb);
if (seg->update_map) {
seg->temporal_update = aom_rb_read_bit(rb);
} else {
seg->temporal_update = 0;
}
seg->update_data = aom_rb_read_bit(rb);
}
// Segmentation data update
if (seg->update_data) {
av1_clearall_segfeatures(seg);
for (int i = 0; i < MAX_SEGMENTS; i++) {
for (int j = 0; j < SEG_LVL_MAX; j++) {
int data = 0;
const int feature_enabled = aom_rb_read_bit(rb);
if (feature_enabled) {
av1_enable_segfeature(seg, i, j);
const int data_max = av1_seg_feature_data_max(j);
const int data_min = -data_max;
const int ubits = get_unsigned_bits(data_max);
if (av1_is_segfeature_signed(j)) {
data = aom_rb_read_inv_signed_literal(rb, ubits);
} else {
data = aom_rb_read_literal(rb, ubits);
}
data = clamp(data, data_min, data_max);
}
av1_set_segdata(seg, i, j, data);
}
}
av1_calculate_segdata(seg);
} else if (cm->prev_frame) {
segfeatures_copy(seg, &cm->prev_frame->seg);
}
segfeatures_copy(&cm->cur_frame->seg, seg);
}
static inline void decode_restoration_mode(AV1_COMMON *cm,
struct aom_read_bit_buffer *rb) {
assert(!cm->features.all_lossless);
const int num_planes = av1_num_planes(cm);
if (cm->features.allow_intrabc) return;
int all_none = 1, chroma_none = 1;
for (int p = 0; p < num_planes; ++p) {
RestorationInfo *rsi = &cm->rst_info[p];
if (aom_rb_read_bit(rb)) {
rsi->frame_restoration_type =
aom_rb_read_bit(rb) ? RESTORE_SGRPROJ : RESTORE_WIENER;
} else {
rsi->frame_restoration_type =
aom_rb_read_bit(rb) ? RESTORE_SWITCHABLE : RESTORE_NONE;
}
if (rsi->frame_restoration_type != RESTORE_NONE) {
all_none = 0;
chroma_none &= p == 0;
}
}
if (!all_none) {
assert(cm->seq_params->sb_size == BLOCK_64X64 ||
cm->seq_params->sb_size == BLOCK_128X128);
const int sb_size = cm->seq_params->sb_size == BLOCK_128X128 ? 128 : 64;
for (int p = 0; p < num_planes; ++p)
cm->rst_info[p].restoration_unit_size = sb_size;
RestorationInfo *rsi = &cm->rst_info[0];
if (sb_size == 64) {
rsi->restoration_unit_size <<= aom_rb_read_bit(rb);
}
if (rsi->restoration_unit_size > 64) {
rsi->restoration_unit_size <<= aom_rb_read_bit(rb);
}
} else {
const int size = RESTORATION_UNITSIZE_MAX;
for (int p = 0; p < num_planes; ++p)
cm->rst_info[p].restoration_unit_size = size;
}
if (num_planes > 1) {
int s =
AOMMIN(cm->seq_params->subsampling_x, cm->seq_params->subsampling_y);
if (s && !chroma_none) {
cm->rst_info[1].restoration_unit_size =
cm->rst_info[0].restoration_unit_size >> (aom_rb_read_bit(rb) * s);
} else {
cm->rst_info[1].restoration_unit_size =
cm->rst_info[0].restoration_unit_size;
}
cm->rst_info[2].restoration_unit_size =
cm->rst_info[1].restoration_unit_size;
}
}
static inline void read_wiener_filter(int wiener_win, WienerInfo *wiener_info,
WienerInfo *ref_wiener_info,
aom_reader *rb) {
memset(wiener_info->vfilter, 0, sizeof(wiener_info->vfilter));
memset(wiener_info->hfilter, 0, sizeof(wiener_info->hfilter));
if (wiener_win == WIENER_WIN)
wiener_info->vfilter[0] = wiener_info->vfilter[WIENER_WIN - 1] =
aom_read_primitive_refsubexpfin(
rb, WIENER_FILT_TAP0_MAXV - WIENER_FILT_TAP0_MINV + 1,
WIENER_FILT_TAP0_SUBEXP_K,
ref_wiener_info->vfilter[0] - WIENER_FILT_TAP0_MINV, ACCT_STR) +
WIENER_FILT_TAP0_MINV;
else
wiener_info->vfilter[0] = wiener_info->vfilter[WIENER_WIN - 1] = 0;
wiener_info->vfilter[1] = wiener_info->vfilter[WIENER_WIN - 2] =
aom_read_primitive_refsubexpfin(
rb, WIENER_FILT_TAP1_MAXV - WIENER_FILT_TAP1_MINV + 1,
WIENER_FILT_TAP1_SUBEXP_K,
ref_wiener_info->vfilter[1] - WIENER_FILT_TAP1_MINV, ACCT_STR) +
WIENER_FILT_TAP1_MINV;
wiener_info->vfilter[2] = wiener_info->vfilter[WIENER_WIN - 3] =
aom_read_primitive_refsubexpfin(
rb, WIENER_FILT_TAP2_MAXV - WIENER_FILT_TAP2_MINV + 1,
WIENER_FILT_TAP2_SUBEXP_K,
ref_wiener_info->vfilter[2] - WIENER_FILT_TAP2_MINV, ACCT_STR) +
WIENER_FILT_TAP2_MINV;
// The central element has an implicit +WIENER_FILT_STEP
wiener_info->vfilter[WIENER_HALFWIN] =
-2 * (wiener_info->vfilter[0] + wiener_info->vfilter[1] +
wiener_info->vfilter[2]);
if (wiener_win == WIENER_WIN)
wiener_info->hfilter[0] = wiener_info->hfilter[WIENER_WIN - 1] =
aom_read_primitive_refsubexpfin(
rb, WIENER_FILT_TAP0_MAXV - WIENER_FILT_TAP0_MINV + 1,
WIENER_FILT_TAP0_SUBEXP_K,
ref_wiener_info->hfilter[0] - WIENER_FILT_TAP0_MINV, ACCT_STR) +
WIENER_FILT_TAP0_MINV;
else
wiener_info->hfilter[0] = wiener_info->hfilter[WIENER_WIN - 1] = 0;
wiener_info->hfilter[1] = wiener_info->hfilter[WIENER_WIN - 2] =
aom_read_primitive_refsubexpfin(
rb, WIENER_FILT_TAP1_MAXV - WIENER_FILT_TAP1_MINV + 1,
WIENER_FILT_TAP1_SUBEXP_K,
ref_wiener_info->hfilter[1] - WIENER_FILT_TAP1_MINV, ACCT_STR) +
WIENER_FILT_TAP1_MINV;
wiener_info->hfilter[2] = wiener_info->hfilter[WIENER_WIN - 3] =
aom_read_primitive_refsubexpfin(
rb, WIENER_FILT_TAP2_MAXV - WIENER_FILT_TAP2_MINV + 1,
WIENER_FILT_TAP2_SUBEXP_K,
ref_wiener_info->hfilter[2] - WIENER_FILT_TAP2_MINV, ACCT_STR) +
WIENER_FILT_TAP2_MINV;
// The central element has an implicit +WIENER_FILT_STEP
wiener_info->hfilter[WIENER_HALFWIN] =
-2 * (wiener_info->hfilter[0] + wiener_info->hfilter[1] +
wiener_info->hfilter[2]);
memcpy(ref_wiener_info, wiener_info, sizeof(*wiener_info));
}
static inline void read_sgrproj_filter(SgrprojInfo *sgrproj_info,
SgrprojInfo *ref_sgrproj_info,
aom_reader *rb) {
sgrproj_info->ep = aom_read_literal(rb, SGRPROJ_PARAMS_BITS, ACCT_STR);
const sgr_params_type *params = &av1_sgr_params[sgrproj_info->ep];
if (params->r[0] == 0) {
sgrproj_info->xqd[0] = 0;
sgrproj_info->xqd[1] =
aom_read_primitive_refsubexpfin(
rb, SGRPROJ_PRJ_MAX1 - SGRPROJ_PRJ_MIN1 + 1, SGRPROJ_PRJ_SUBEXP_K,
ref_sgrproj_info->xqd[1] - SGRPROJ_PRJ_MIN1, ACCT_STR) +
SGRPROJ_PRJ_MIN1;
} else if (params->r[1] == 0) {
sgrproj_info->xqd[0] =
aom_read_primitive_refsubexpfin(
rb, SGRPROJ_PRJ_MAX0 - SGRPROJ_PRJ_MIN0 + 1, SGRPROJ_PRJ_SUBEXP_K,
ref_sgrproj_info->xqd[0] - SGRPROJ_PRJ_MIN0, ACCT_STR) +
SGRPROJ_PRJ_MIN0;
sgrproj_info->xqd[1] = clamp((1 << SGRPROJ_PRJ_BITS) - sgrproj_info->xqd[0],
SGRPROJ_PRJ_MIN1, SGRPROJ_PRJ_MAX1);
} else {
sgrproj_info->xqd[0] =
aom_read_primitive_refsubexpfin(
rb, SGRPROJ_PRJ_MAX0 - SGRPROJ_PRJ_MIN0 + 1, SGRPROJ_PRJ_SUBEXP_K,
ref_sgrproj_info->xqd[0] - SGRPROJ_PRJ_MIN0, ACCT_STR) +
SGRPROJ_PRJ_MIN0;
sgrproj_info->xqd[1] =
aom_read_primitive_refsubexpfin(
rb, SGRPROJ_PRJ_MAX1 - SGRPROJ_PRJ_MIN1 + 1, SGRPROJ_PRJ_SUBEXP_K,
ref_sgrproj_info->xqd[1] - SGRPROJ_PRJ_MIN1, ACCT_STR) +
SGRPROJ_PRJ_MIN1;
}
memcpy(ref_sgrproj_info, sgrproj_info, sizeof(*sgrproj_info));
}
static inline void loop_restoration_read_sb_coeffs(const AV1_COMMON *const cm,
MACROBLOCKD *xd,
aom_reader *const r,
int plane, int runit_idx) {
const RestorationInfo *rsi = &cm->rst_info[plane];
RestorationUnitInfo *rui = &rsi->unit_info[runit_idx];
assert(rsi->frame_restoration_type != RESTORE_NONE);
assert(!cm->features.all_lossless);
const int wiener_win = (plane > 0) ? WIENER_WIN_CHROMA : WIENER_WIN;
WienerInfo *wiener_info = xd->wiener_info + plane;
SgrprojInfo *sgrproj_info = xd->sgrproj_info + plane;
if (rsi->frame_restoration_type == RESTORE_SWITCHABLE) {
rui->restoration_type =
aom_read_symbol(r, xd->tile_ctx->switchable_restore_cdf,
RESTORE_SWITCHABLE_TYPES, ACCT_STR);
switch (rui->restoration_type) {
case RESTORE_WIENER:
read_wiener_filter(wiener_win, &rui->wiener_info, wiener_info, r);
break;
case RESTORE_SGRPROJ:
read_sgrproj_filter(&rui->sgrproj_info, sgrproj_info, r);
break;
default: assert(rui->restoration_type == RESTORE_NONE); break;
}
} else if (rsi->frame_restoration_type == RESTORE_WIENER) {
if (aom_read_symbol(r, xd->tile_ctx->wiener_restore_cdf, 2, ACCT_STR)) {
rui->restoration_type = RESTORE_WIENER;
read_wiener_filter(wiener_win, &rui->wiener_info, wiener_info, r);
} else {
rui->restoration_type = RESTORE_NONE;
}
} else if (rsi->frame_restoration_type == RESTORE_SGRPROJ) {
if (aom_read_symbol(r, xd->tile_ctx->sgrproj_restore_cdf, 2, ACCT_STR)) {
rui->restoration_type = RESTORE_SGRPROJ;
read_sgrproj_filter(&rui->sgrproj_info, sgrproj_info, r);
} else {
rui->restoration_type = RESTORE_NONE;
}
}
}
static inline void setup_loopfilter(AV1_COMMON *cm,
struct aom_read_bit_buffer *rb) {
const int num_planes = av1_num_planes(cm);
struct loopfilter *lf = &cm->lf;
if (cm->features.allow_intrabc || cm->features.coded_lossless) {
// write default deltas to frame buffer
av1_set_default_ref_deltas(cm->cur_frame->ref_deltas);
av1_set_default_mode_deltas(cm->cur_frame->mode_deltas);
return;
}
assert(!cm->features.coded_lossless);
if (cm->prev_frame) {
// write deltas to frame buffer
memcpy(lf->ref_deltas, cm->prev_frame->ref_deltas, REF_FRAMES);
memcpy(lf->mode_deltas, cm->prev_frame->mode_deltas, MAX_MODE_LF_DELTAS);
} else {
av1_set_default_ref_deltas(lf->ref_deltas);
av1_set_default_mode_deltas(lf->mode_deltas);
}
lf->filter_level[0] = aom_rb_read_literal(rb, 6);
lf->filter_level[1] = aom_rb_read_literal(rb, 6);
if (num_planes > 1) {
if (lf->filter_level[0] || lf->filter_level[1]) {
lf->filter_level_u = aom_rb_read_literal(rb, 6);
lf->filter_level_v = aom_rb_read_literal(rb, 6);
}
}
lf->sharpness_level = aom_rb_read_literal(rb, 3);
// Read in loop filter deltas applied at the MB level based on mode or ref
// frame.
lf->mode_ref_delta_update = 0;
lf->mode_ref_delta_enabled = aom_rb_read_bit(rb);
if (lf->mode_ref_delta_enabled) {
lf->mode_ref_delta_update = aom_rb_read_bit(rb);
if (lf->mode_ref_delta_update) {
for (int i = 0; i < REF_FRAMES; i++)
if (aom_rb_read_bit(rb))
lf->ref_deltas[i] = aom_rb_read_inv_signed_literal(rb, 6);
for (int i = 0; i < MAX_MODE_LF_DELTAS; i++)
if (aom_rb_read_bit(rb))
lf->mode_deltas[i] = aom_rb_read_inv_signed_literal(rb, 6);
}
}
// write deltas to frame buffer
memcpy(cm->cur_frame->ref_deltas, lf->ref_deltas, REF_FRAMES);
memcpy(cm->cur_frame->mode_deltas, lf->mode_deltas, MAX_MODE_LF_DELTAS);
}
static inline void setup_cdef(AV1_COMMON *cm, struct aom_read_bit_buffer *rb) {
const int num_planes = av1_num_planes(cm);
CdefInfo *const cdef_info = &cm->cdef_info;
if (cm->features.allow_intrabc) return;
cdef_info->cdef_damping = aom_rb_read_literal(rb, 2) + 3;
cdef_info->cdef_bits = aom_rb_read_literal(rb, 2);
cdef_info->nb_cdef_strengths = 1 << cdef_info->cdef_bits;
for (int i = 0; i < cdef_info->nb_cdef_strengths; i++) {
cdef_info->cdef_strengths[i] = aom_rb_read_literal(rb, CDEF_STRENGTH_BITS);
cdef_info->cdef_uv_strengths[i] =
num_planes > 1 ? aom_rb_read_literal(rb, CDEF_STRENGTH_BITS) : 0;
}
}
static inline int read_delta_q(struct aom_read_bit_buffer *rb) {
return aom_rb_read_bit(rb) ? aom_rb_read_inv_signed_literal(rb, 6) : 0;
}
static inline void setup_quantization(CommonQuantParams *quant_params,
int num_planes, bool separate_uv_delta_q,
struct aom_read_bit_buffer *rb) {
quant_params->base_qindex = aom_rb_read_literal(rb, QINDEX_BITS);
quant_params->y_dc_delta_q = read_delta_q(rb);
if (num_planes > 1) {
int diff_uv_delta = 0;
if (separate_uv_delta_q) diff_uv_delta = aom_rb_read_bit(rb);
quant_params->u_dc_delta_q = read_delta_q(rb);
quant_params->u_ac_delta_q = read_delta_q(rb);
if (diff_uv_delta) {
quant_params->v_dc_delta_q = read_delta_q(rb);
quant_params->v_ac_delta_q = read_delta_q(rb);
} else {
quant_params->v_dc_delta_q = quant_params->u_dc_delta_q;
quant_params->v_ac_delta_q = quant_params->u_ac_delta_q;
}
} else {
quant_params->u_dc_delta_q = 0;
quant_params->u_ac_delta_q = 0;
quant_params->v_dc_delta_q = 0;
quant_params->v_ac_delta_q = 0;
}
quant_params->using_qmatrix = aom_rb_read_bit(rb);
if (quant_params->using_qmatrix) {
quant_params->qmatrix_level_y = aom_rb_read_literal(rb, QM_LEVEL_BITS);
quant_params->qmatrix_level_u = aom_rb_read_literal(rb, QM_LEVEL_BITS);
if (!separate_uv_delta_q)
quant_params->qmatrix_level_v = quant_params->qmatrix_level_u;
else
quant_params->qmatrix_level_v = aom_rb_read_literal(rb, QM_LEVEL_BITS);
} else {
quant_params->qmatrix_level_y = 0;
quant_params->qmatrix_level_u = 0;
quant_params->qmatrix_level_v = 0;
}
}
// Get global dequant matrix.
static const qm_val_t *get_iqmatrix(const CommonQuantParams *quant_params,
int qmlevel, int plane, TX_SIZE tx_size) {
assert(quant_params->giqmatrix[qmlevel][plane][tx_size] != NULL ||
qmlevel == NUM_QM_LEVELS - 1);
return quant_params->giqmatrix[qmlevel][plane][tx_size];
}
// Build y/uv dequant values based on segmentation.
static inline void setup_segmentation_dequant(AV1_COMMON *const cm,
MACROBLOCKD *const xd) {
const int bit_depth = cm->seq_params->bit_depth;
// When segmentation is disabled, only the first value is used. The
// remaining are don't cares.
const int max_segments = cm->seg.enabled ? MAX_SEGMENTS : 1;
CommonQuantParams *const quant_params = &cm->quant_params;
for (int i = 0; i < max_segments; ++i) {
const int qindex = xd->qindex[i];
quant_params->y_dequant_QTX[i][0] =
av1_dc_quant_QTX(qindex, quant_params->y_dc_delta_q, bit_depth);
quant_params->y_dequant_QTX[i][1] = av1_ac_quant_QTX(qindex, 0, bit_depth);
quant_params->u_dequant_QTX[i][0] =
av1_dc_quant_QTX(qindex, quant_params->u_dc_delta_q, bit_depth);
quant_params->u_dequant_QTX[i][1] =
av1_ac_quant_QTX(qindex, quant_params->u_ac_delta_q, bit_depth);
quant_params->v_dequant_QTX[i][0] =
av1_dc_quant_QTX(qindex, quant_params->v_dc_delta_q, bit_depth);
quant_params->v_dequant_QTX[i][1] =
av1_ac_quant_QTX(qindex, quant_params->v_ac_delta_q, bit_depth);
const int use_qmatrix = av1_use_qmatrix(quant_params, xd, i);
// NB: depends on base index so there is only 1 set per frame
// No quant weighting when lossless or signalled not using QM
const int qmlevel_y =
use_qmatrix ? quant_params->qmatrix_level_y : NUM_QM_LEVELS - 1;
for (int j = 0; j < TX_SIZES_ALL; ++j) {
quant_params->y_iqmatrix[i][j] =
get_iqmatrix(quant_params, qmlevel_y, AOM_PLANE_Y, j);
}
const int qmlevel_u =
use_qmatrix ? quant_params->qmatrix_level_u : NUM_QM_LEVELS - 1;
for (int j = 0; j < TX_SIZES_ALL; ++j) {
quant_params->u_iqmatrix[i][j] =
get_iqmatrix(quant_params, qmlevel_u, AOM_PLANE_U, j);
}
const int qmlevel_v =
use_qmatrix ? quant_params->qmatrix_level_v : NUM_QM_LEVELS - 1;
for (int j = 0; j < TX_SIZES_ALL; ++j) {
quant_params->v_iqmatrix[i][j] =
get_iqmatrix(quant_params, qmlevel_v, AOM_PLANE_V, j);
}
}
}
static InterpFilter read_frame_interp_filter(struct aom_read_bit_buffer *rb) {
return aom_rb_read_bit(rb) ? SWITCHABLE
: aom_rb_read_literal(rb, LOG_SWITCHABLE_FILTERS);
}
static void read_frame_size(struct aom_read_bit_buffer *rb, int num_bits_width,
int num_bits_height, int *width, int *height) {
*width = aom_rb_read_literal(rb, num_bits_width) + 1;
*height = aom_rb_read_literal(rb, num_bits_height) + 1;
}
static inline void setup_render_size(AV1_COMMON *cm,
struct aom_read_bit_buffer *rb) {
cm->render_width = cm->superres_upscaled_width;
cm->render_height = cm->superres_upscaled_height;
if (aom_rb_read_bit(rb))
read_frame_size(rb, 16, 16, &cm->render_width, &cm->render_height);
}
// TODO(afergs): make "struct aom_read_bit_buffer *const rb"?
static inline void setup_superres(AV1_COMMON *const cm,
struct aom_read_bit_buffer *rb, int *width,
int *height) {
cm->superres_upscaled_width = *width;
cm->superres_upscaled_height = *height;
const SequenceHeader *const seq_params = cm->seq_params;
if (!seq_params->enable_superres) return;
if (aom_rb_read_bit(rb)) {
cm->superres_scale_denominator =
(uint8_t)aom_rb_read_literal(rb, SUPERRES_SCALE_BITS);
cm->superres_scale_denominator += SUPERRES_SCALE_DENOMINATOR_MIN;
// Don't edit cm->width or cm->height directly, or the buffers won't get
// resized correctly
av1_calculate_scaled_superres_size(width, height,
cm->superres_scale_denominator);
} else {
// 1:1 scaling - ie. no scaling, scale not provided
cm->superres_scale_denominator = SCALE_NUMERATOR;
}
}
static inline void resize_context_buffers(AV1_COMMON *cm, int width,
int height) {
#if CONFIG_SIZE_LIMIT
if (width > DECODE_WIDTH_LIMIT || height > DECODE_HEIGHT_LIMIT)
aom_internal_error(cm->error, AOM_CODEC_CORRUPT_FRAME,
"Dimensions of %dx%d beyond allowed size of %dx%d.",
width, height, DECODE_WIDTH_LIMIT, DECODE_HEIGHT_LIMIT);
#endif
if (cm->width != width || cm->height != height) {
const int new_mi_rows = CEIL_POWER_OF_TWO(height, MI_SIZE_LOG2);
const int new_mi_cols = CEIL_POWER_OF_TWO(width, MI_SIZE_LOG2);
// Allocations in av1_alloc_context_buffers() depend on individual
// dimensions as well as the overall size.
if (new_mi_cols > cm->mi_params.mi_cols ||
new_mi_rows > cm->mi_params.mi_rows) {
if (av1_alloc_context_buffers(cm, width, height, BLOCK_4X4)) {
// The cm->mi_* values have been cleared and any existing context
// buffers have been freed. Clear cm->width and cm->height to be
// consistent and to force a realloc next time.
cm->width = 0;
cm->height = 0;
aom_internal_error(cm->error, AOM_CODEC_MEM_ERROR,
"Failed to allocate context buffers");
}
} else {
cm->mi_params.set_mb_mi(&cm->mi_params, width, height, BLOCK_4X4);
}
av1_init_mi_buffers(&cm->mi_params);
cm->width = width;
cm->height = height;
}
ensure_mv_buffer(cm->cur_frame, cm);
cm->cur_frame->width = cm->width;
cm->cur_frame->height = cm->height;
}
static inline void setup_buffer_pool(AV1_COMMON *cm) {
BufferPool *const pool = cm->buffer_pool;
const SequenceHeader *const seq_params = cm->seq_params;
lock_buffer_pool(pool);
if (aom_realloc_frame_buffer(
&cm->cur_frame->buf, cm->width, cm->height, seq_params->subsampling_x,
seq_params->subsampling_y, seq_params->use_highbitdepth,
AOM_DEC_BORDER_IN_PIXELS, cm->features.byte_alignment,
&cm->cur_frame->raw_frame_buffer, pool->get_fb_cb, pool->cb_priv,
false, 0)) {
unlock_buffer_pool(pool);
aom_internal_error(cm->error, AOM_CODEC_MEM_ERROR,
"Failed to allocate frame buffer");
}
unlock_buffer_pool(pool);
cm->cur_frame->buf.bit_depth = (unsigned int)seq_params->bit_depth;
cm->cur_frame->buf.color_primaries = seq_params->color_primaries;
cm->cur_frame->buf.transfer_characteristics =
seq_params->transfer_characteristics;
cm->cur_frame->buf.matrix_coefficients = seq_params->matrix_coefficients;
cm->cur_frame->buf.monochrome = seq_params->monochrome;
cm->cur_frame->buf.chroma_sample_position =
seq_params->chroma_sample_position;
cm->cur_frame->buf.color_range = seq_params->color_range;
cm->cur_frame->buf.render_width = cm->render_width;
cm->cur_frame->buf.render_height = cm->render_height;
}
static inline void setup_frame_size(AV1_COMMON *cm,
int frame_size_override_flag,
struct aom_read_bit_buffer *rb) {
const SequenceHeader *const seq_params = cm->seq_params;
int width, height;
if (frame_size_override_flag) {
int num_bits_width = seq_params->num_bits_width;
int num_bits_height = seq_params->num_bits_height;
read_frame_size(rb, num_bits_width, num_bits_height, &width, &height);
if (width > seq_params->max_frame_width ||
height > seq_params->max_frame_height) {
aom_internal_error(cm->error, AOM_CODEC_CORRUPT_FRAME,
"Frame dimensions are larger than the maximum values");
}
} else {
width = seq_params->max_frame_width;
height = seq_params->max_frame_height;
}
setup_superres(cm, rb, &width, &height);
resize_context_buffers(cm, width, height);
setup_render_size(cm, rb);
setup_buffer_pool(cm);
}
static inline void setup_sb_size(SequenceHeader *seq_params,
struct aom_read_bit_buffer *rb) {
set_sb_size(seq_params, aom_rb_read_bit(rb) ? BLOCK_128X128 : BLOCK_64X64);
}
static inline int valid_ref_frame_img_fmt(aom_bit_depth_t ref_bit_depth,
int ref_xss, int ref_yss,
aom_bit_depth_t this_bit_depth,
int this_xss, int this_yss) {
return ref_bit_depth == this_bit_depth && ref_xss == this_xss &&
ref_yss == this_yss;
}
static inline void setup_frame_size_with_refs(AV1_COMMON *cm,
struct aom_read_bit_buffer *rb) {
int width, height;
int found = 0;
int has_valid_ref_frame = 0;
for (int i = LAST_FRAME; i <= ALTREF_FRAME; ++i) {
if (aom_rb_read_bit(rb)) {
const RefCntBuffer *const ref_buf = get_ref_frame_buf(cm, i);
// This will never be NULL in a normal stream, as streams are required to
// have a shown keyframe before any inter frames, which would refresh all
// the reference buffers. However, it might be null if we're starting in
// the middle of a stream, and static analysis will error if we don't do
// a null check here.
if (ref_buf == NULL) {
aom_internal_error(cm->error, AOM_CODEC_CORRUPT_FRAME,
"Invalid condition: invalid reference buffer");
} else {
const YV12_BUFFER_CONFIG *const buf = &ref_buf->buf;
width = buf->y_crop_width;
height = buf->y_crop_height;
cm->render_width = buf->render_width;
cm->render_height = buf->render_height;
setup_superres(cm, rb, &width, &height);
resize_context_buffers(cm, width, height);
found = 1;
break;
}
}
}
const SequenceHeader *const seq_params = cm->seq_params;
if (!found) {
int num_bits_width = seq_params->num_bits_width;
int num_bits_height = seq_params->num_bits_height;
read_frame_size(rb, num_bits_width, num_bits_height, &width, &height);
setup_superres(cm, rb, &width, &height);
resize_context_buffers(cm, width, height);
setup_render_size(cm, rb);
}
if (width <= 0 || height <= 0)
aom_internal_error(cm->error, AOM_CODEC_CORRUPT_FRAME,
"Invalid frame size");
// Check to make sure at least one of frames that this frame references
// has valid dimensions.
for (int i = LAST_FRAME; i <= ALTREF_FRAME; ++i) {
const RefCntBuffer *const ref_frame = get_ref_frame_buf(cm, i);
has_valid_ref_frame |=
valid_ref_frame_size(ref_frame->buf.y_crop_width,
ref_frame->buf.y_crop_height, width, height);
}
if (!has_valid_ref_frame)
aom_internal_error(cm->error, AOM_CODEC_CORRUPT_FRAME,
"Referenced frame has invalid size");
for (int i = LAST_FRAME; i <= ALTREF_FRAME; ++i) {
const RefCntBuffer *const ref_frame = get_ref_frame_buf(cm, i);
if (!valid_ref_frame_img_fmt(
ref_frame->buf.bit_depth, ref_frame->buf.subsampling_x,
ref_frame->buf.subsampling_y, seq_params->bit_depth,
seq_params->subsampling_x, seq_params->subsampling_y))
aom_internal_error(cm->error, AOM_CODEC_CORRUPT_FRAME,
"Referenced frame has incompatible color format");
}
setup_buffer_pool(cm);
}
// Same function as av1_read_uniform but reading from uncompresses header wb
static int rb_read_uniform(struct aom_read_bit_buffer *const rb, int n) {
const int l = get_unsigned_bits(n);
const int m = (1 << l) - n;
const int v = aom_rb_read_literal(rb, l - 1);
assert(l != 0);
if (v < m)
return v;
else
return (v << 1) - m + aom_rb_read_bit(rb);
}
static inline void read_tile_info_max_tile(
AV1_COMMON *const cm, struct aom_read_bit_buffer *const rb) {
const SequenceHeader *const seq_params = cm->seq_params;
CommonTileParams *const tiles = &cm->tiles;
int width_sb =
CEIL_POWER_OF_TWO(cm->mi_params.mi_cols, seq_params->mib_size_log2);
int height_sb =
CEIL_POWER_OF_TWO(cm->mi_params.mi_rows, seq_params->mib_size_log2);
av1_get_tile_limits(cm);
tiles->uniform_spacing = aom_rb_read_bit(rb);
// Read tile columns
if (tiles->uniform_spacing) {
tiles->log2_cols = tiles->min_log2_cols;
while (tiles->log2_cols < tiles->max_log2_cols) {
if (!aom_rb_read_bit(rb)) {
break;
}
tiles->log2_cols++;
}
} else {
int i;
int start_sb;
for (i = 0, start_sb = 0; width_sb > 0 && i < MAX_TILE_COLS; i++) {
const int size_sb =
1 + rb_read_uniform(rb, AOMMIN(width_sb, tiles->max_width_sb));
tiles->col_start_sb[i] = start_sb;
start_sb += size_sb;
width_sb -= size_sb;
}
tiles->cols = i;
tiles->col_start_sb[i] = start_sb + width_sb;
}
av1_calculate_tile_cols(seq_params, cm->mi_params.mi_rows,
cm->mi_params.mi_cols, tiles);
// Read tile rows
if (tiles->uniform_spacing) {
tiles->log2_rows = tiles->min_log2_rows;
while (tiles->log2_rows < tiles->max_log2_rows) {
if (!aom_rb_read_bit(rb)) {
break;
}
tiles->log2_rows++;
}
} else {
int i;
int start_sb;
for (i = 0, start_sb = 0; height_sb > 0 && i < MAX_TILE_ROWS; i++) {
const int size_sb =
1 + rb_read_uniform(rb, AOMMIN(height_sb, tiles->max_height_sb));
tiles->row_start_sb[i] = start_sb;
start_sb += size_sb;
height_sb -= size_sb;
}
tiles->rows = i;
tiles->row_start_sb[i] = start_sb + height_sb;
}
av1_calculate_tile_rows(seq_params, cm->mi_params.mi_rows, tiles);
}
void av1_set_single_tile_decoding_mode(AV1_COMMON *const cm) {
cm->tiles.single_tile_decoding = 0;
if (cm->tiles.large_scale) {
struct loopfilter *lf = &cm->lf;
RestorationInfo *const rst_info = cm->rst_info;
const CdefInfo *const cdef_info = &cm->cdef_info;
// Figure out single_tile_decoding by loopfilter_level.
const int no_loopfilter = !(lf->filter_level[0] || lf->filter_level[1]);
const int no_cdef = cdef_info->cdef_bits == 0 &&
cdef_info->cdef_strengths[0] == 0 &&
cdef_info->cdef_uv_strengths[0] == 0;
const int no_restoration =
rst_info[0].frame_restoration_type == RESTORE_NONE &&
rst_info[1].frame_restoration_type == RESTORE_NONE &&
rst_info[2].frame_restoration_type == RESTORE_NONE;
assert(IMPLIES(cm->features.coded_lossless, no_loopfilter && no_cdef));
assert(IMPLIES(cm->features.all_lossless, no_restoration));
cm->tiles.single_tile_decoding = no_loopfilter && no_cdef && no_restoration;
}
}
static inline void read_tile_info(AV1Decoder *const pbi,
struct aom_read_bit_buffer *const rb) {
AV1_COMMON *const cm = &pbi->common;
read_tile_info_max_tile(cm, rb);
pbi->context_update_tile_id = 0;
if (cm->tiles.rows * cm->tiles.cols > 1) {
// tile to use for cdf update
pbi->context_update_tile_id =
aom_rb_read_literal(rb, cm->tiles.log2_rows + cm->tiles.log2_cols);
if (pbi->context_update_tile_id >= cm->tiles.rows * cm->tiles.cols) {
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Invalid context_update_tile_id");
}
// tile size magnitude
pbi->tile_size_bytes = aom_rb_read_literal(rb, 2) + 1;
}
}
#if EXT_TILE_DEBUG
static inline void read_ext_tile_info(AV1Decoder *const pbi,
struct aom_read_bit_buffer *const rb) {
AV1_COMMON *const cm = &pbi->common;
// This information is stored as a separate byte.
int mod = rb->bit_offset % CHAR_BIT;
if (mod > 0) aom_rb_read_literal(rb, CHAR_BIT - mod);
assert(rb->bit_offset % CHAR_BIT == 0);
if (cm->tiles.cols * cm->tiles.rows > 1) {
// Read the number of bytes used to store tile size
pbi->tile_col_size_bytes = aom_rb_read_literal(rb, 2) + 1;
pbi->tile_size_bytes = aom_rb_read_literal(rb, 2) + 1;
}
}
#endif // EXT_TILE_DEBUG
static size_t mem_get_varsize(const uint8_t *src, int sz) {
switch (sz) {
case 1: return src[0];
case 2: return mem_get_le16(src);
case 3: return mem_get_le24(src);
case 4: return mem_get_le32(src);
default: assert(0 && "Invalid size"); return -1;
}
}
#if EXT_TILE_DEBUG
// Reads the next tile returning its size and adjusting '*data' accordingly
// based on 'is_last'. On return, '*data' is updated to point to the end of the
// raw tile buffer in the bit stream.
static inline void get_ls_tile_buffer(
const uint8_t *const data_end, struct aom_internal_error_info *error_info,
const uint8_t **data, TileBufferDec (*const tile_buffers)[MAX_TILE_COLS],
int tile_size_bytes, int col, int row, int tile_copy_mode) {
size_t size;
size_t copy_size = 0;
const uint8_t *copy_data = NULL;
if (!read_is_valid(*data, tile_size_bytes, data_end))
aom_internal_error(error_info, AOM_CODEC_CORRUPT_FRAME,
"Truncated packet or corrupt tile length");
size = mem_get_varsize(*data, tile_size_bytes);
// If tile_copy_mode = 1, then the top bit of the tile header indicates copy
// mode.
if (tile_copy_mode && (size >> (tile_size_bytes * 8 - 1)) == 1) {
// The remaining bits in the top byte signal the row offset
int offset = (size >> (tile_size_bytes - 1) * 8) & 0x7f;
if (offset > row) {
aom_internal_error(
error_info, AOM_CODEC_CORRUPT_FRAME,
"Invalid row offset in tile copy mode: row=%d offset=%d", row,
offset);
}
// Currently, only use tiles in same column as reference tiles.
copy_data = tile_buffers[row - offset][col].data;
copy_size = tile_buffers[row - offset][col].size;
size = 0;
} else {
size += AV1_MIN_TILE_SIZE_BYTES;
}
*data += tile_size_bytes;
if (size > (size_t)(data_end - *data))
aom_internal_error(error_info, AOM_CODEC_CORRUPT_FRAME,
"Truncated packet or corrupt tile size");
if (size > 0) {
tile_buffers[row][col].data = *data;
tile_buffers[row][col].size = size;
} else {
tile_buffers[row][col].data = copy_data;
tile_buffers[row][col].size = copy_size;
}
*data += size;
}
// Returns the end of the last tile buffer
// (tile_buffers[cm->tiles.rows - 1][cm->tiles.cols - 1]).
static const uint8_t *get_ls_tile_buffers(
AV1Decoder *pbi, const uint8_t *data, const uint8_t *data_end,
TileBufferDec (*const tile_buffers)[MAX_TILE_COLS]) {
AV1_COMMON *const cm = &pbi->common;
const int tile_cols = cm->tiles.cols;
const int tile_rows = cm->tiles.rows;
const int have_tiles = tile_cols * tile_rows > 1;
const uint8_t *raw_data_end; // The end of the last tile buffer
if (!have_tiles) {
const size_t tile_size = data_end - data;
tile_buffers[0][0].data = data;
tile_buffers[0][0].size = tile_size;
raw_data_end = NULL;
} else {
// We locate only the tile buffers that are required, which are the ones
// specified by pbi->dec_tile_col and pbi->dec_tile_row. Also, we always
// need the last (bottom right) tile buffer, as we need to know where the
// end of the compressed frame buffer is for proper superframe decoding.
const uint8_t *tile_col_data_end[MAX_TILE_COLS] = { NULL };
const uint8_t *const data_start = data;
const int dec_tile_row = AOMMIN(pbi->dec_tile_row, tile_rows);
const int single_row = pbi->dec_tile_row >= 0;
const int tile_rows_start = single_row ? dec_tile_row : 0;
const int tile_rows_end = single_row ? tile_rows_start + 1 : tile_rows;
const int dec_tile_col = AOMMIN(pbi->dec_tile_col, tile_cols);
const int single_col = pbi->dec_tile_col >= 0;
const int tile_cols_start = single_col ? dec_tile_col : 0;
const int tile_cols_end = single_col ? tile_cols_start + 1 : tile_cols;
const int tile_col_size_bytes = pbi->tile_col_size_bytes;
const int tile_size_bytes = pbi->tile_size_bytes;
int tile_width, tile_height;
if (!av1_get_uniform_tile_size(cm, &tile_width, &tile_height)) {
aom_internal_error(
&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Not all the tiles in the tile list have the same size.");
}
const int tile_copy_mode =
((AOMMAX(tile_width, tile_height) << MI_SIZE_LOG2) <= 256) ? 1 : 0;
// Read tile column sizes for all columns (we need the last tile buffer)
for (int c = 0; c < tile_cols; ++c) {
const int is_last = c == tile_cols - 1;
size_t tile_col_size;
if (!is_last) {
if (tile_col_size_bytes > data_end - data) {
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Not enough data to read tile_col_size");
}
tile_col_size = mem_get_varsize(data, tile_col_size_bytes);
data += tile_col_size_bytes;
if (tile_col_size > (size_t)(data_end - data)) {
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"tile_col_data_end[%d] is out of bound", c);
}
tile_col_data_end[c] = data + tile_col_size;
} else {
tile_col_size = data_end - data;
tile_col_data_end[c] = data_end;
}
data += tile_col_size;
}
data = data_start;
// Read the required tile sizes.
for (int c = tile_cols_start; c < tile_cols_end; ++c) {
const int is_last = c == tile_cols - 1;
if (c > 0) data = tile_col_data_end[c - 1];
if (!is_last) data += tile_col_size_bytes;
// Get the whole of the last column, otherwise stop at the required tile.
for (int r = 0; r < (is_last ? tile_rows : tile_rows_end); ++r) {
get_ls_tile_buffer(tile_col_data_end[c], &pbi->error, &data,
tile_buffers, tile_size_bytes, c, r, tile_copy_mode);
}
}
// If we have not read the last column, then read it to get the last tile.
if (tile_cols_end != tile_cols) {
const int c = tile_cols - 1;
data = tile_col_data_end[c - 1];
for (int r = 0; r < tile_rows; ++r) {
get_ls_tile_buffer(tile_col_data_end[c], &pbi->error, &data,
tile_buffers, tile_size_bytes, c, r, tile_copy_mode);
}
}
raw_data_end = data;
}
return raw_data_end;
}
#endif // EXT_TILE_DEBUG
static const uint8_t *get_ls_single_tile_buffer(
AV1Decoder *pbi, const uint8_t *data,
TileBufferDec (*const tile_buffers)[MAX_TILE_COLS]) {
assert(pbi->dec_tile_row >= 0 && pbi->dec_tile_col >= 0);
tile_buffers[pbi->dec_tile_row][pbi->dec_tile_col].data = data;
tile_buffers[pbi->dec_tile_row][pbi->dec_tile_col].size =
(size_t)pbi->coded_tile_data_size;
return data + pbi->coded_tile_data_size;
}
// Reads the next tile returning its size and adjusting '*data' accordingly
// based on 'is_last'.
static inline void get_tile_buffer(const uint8_t *const data_end,
const int tile_size_bytes, int is_last,
struct aom_internal_error_info *error_info,
const uint8_t **data,
TileBufferDec *const buf) {
size_t size;
if (!is_last) {
if (!read_is_valid(*data, tile_size_bytes, data_end))
aom_internal_error(error_info, AOM_CODEC_CORRUPT_FRAME,
"Not enough data to read tile size");
size = mem_get_varsize(*data, tile_size_bytes) + AV1_MIN_TILE_SIZE_BYTES;
*data += tile_size_bytes;
if (size > (size_t)(data_end - *data))
aom_internal_error(error_info, AOM_CODEC_CORRUPT_FRAME,
"Truncated packet or corrupt tile size");
} else {
size = data_end - *data;
}
buf->data = *data;
buf->size = size;
*data += size;
}
static inline void get_tile_buffers(
AV1Decoder *pbi, const uint8_t *data, const uint8_t *data_end,
TileBufferDec (*const tile_buffers)[MAX_TILE_COLS], int start_tile,
int end_tile) {
AV1_COMMON *const cm = &pbi->common;
const int tile_cols = cm->tiles.cols;
const int tile_rows = cm->tiles.rows;
int tc = 0;
for (int r = 0; r < tile_rows; ++r) {
for (int c = 0; c < tile_cols; ++c, ++tc) {
TileBufferDec *const buf = &tile_buffers[r][c];
const int is_last = (tc == end_tile);
const size_t hdr_offset = 0;
if (tc < start_tile || tc > end_tile) continue;
if (data + hdr_offset >= data_end)
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Data ended before all tiles were read.");
data += hdr_offset;
get_tile_buffer(data_end, pbi->tile_size_bytes, is_last, &pbi->error,
&data, buf);
}
}
}
static inline void set_cb_buffer(AV1Decoder *pbi, DecoderCodingBlock *dcb,
CB_BUFFER *cb_buffer_base,
const int num_planes, int mi_row, int mi_col) {
AV1_COMMON *const cm = &pbi->common;
int mib_size_log2 = cm->seq_params->mib_size_log2;
int stride = (cm->mi_params.mi_cols >> mib_size_log2) + 1;
int offset = (mi_row >> mib_size_log2) * stride + (mi_col >> mib_size_log2);
CB_BUFFER *cb_buffer = cb_buffer_base + offset;
for (int plane = 0; plane < num_planes; ++plane) {
dcb->dqcoeff_block[plane] = cb_buffer->dqcoeff[plane];
dcb->eob_data[plane] = cb_buffer->eob_data[plane];
dcb->cb_offset[plane] = 0;
dcb->txb_offset[plane] = 0;
}
MACROBLOCKD *const xd = &dcb->xd;
xd->plane[0].color_index_map = cb_buffer->color_index_map[0];
xd->plane[1].color_index_map = cb_buffer->color_index_map[1];
xd->color_index_map_offset[0] = 0;
xd->color_index_map_offset[1] = 0;
}
static inline void decoder_alloc_tile_data(AV1Decoder *pbi, const int n_tiles) {
AV1_COMMON *const cm = &pbi->common;
aom_free(pbi->tile_data);
pbi->allocated_tiles = 0;
CHECK_MEM_ERROR(cm, pbi->tile_data,
aom_memalign(32, n_tiles * sizeof(*pbi->tile_data)));
pbi->allocated_tiles = n_tiles;
for (int i = 0; i < n_tiles; i++) {
TileDataDec *const tile_data = pbi->tile_data + i;
av1_zero(tile_data->dec_row_mt_sync);
}
pbi->allocated_row_mt_sync_rows = 0;
}
// Set up nsync by width.
static inline int get_sync_range(int width) {
// nsync numbers are picked by testing.
#if 0
if (width < 640)
return 1;
else if (width <= 1280)
return 2;
else if (width <= 4096)
return 4;
else
return 8;
#else
(void)width;
#endif
return 1;
}
// Allocate memory for decoder row synchronization
static inline void dec_row_mt_alloc(AV1DecRowMTSync *dec_row_mt_sync,
AV1_COMMON *cm, int rows) {
dec_row_mt_sync->allocated_sb_rows = rows;
#if CONFIG_MULTITHREAD
{
int i;
CHECK_MEM_ERROR(cm, dec_row_mt_sync->mutex_,
aom_malloc(sizeof(*(dec_row_mt_sync->mutex_)) * rows));
if (dec_row_mt_sync->mutex_) {
for (i = 0; i < rows; ++i) {
pthread_mutex_init(&dec_row_mt_sync->mutex_[i], NULL);
}
}
CHECK_MEM_ERROR(cm, dec_row_mt_sync->cond_,
aom_malloc(sizeof(*(dec_row_mt_sync->cond_)) * rows));
if (dec_row_mt_sync->cond_) {
for (i = 0; i < rows; ++i) {
pthread_cond_init(&dec_row_mt_sync->cond_[i], NULL);
}
}
}
#endif // CONFIG_MULTITHREAD
CHECK_MEM_ERROR(cm, dec_row_mt_sync->cur_sb_col,
aom_malloc(sizeof(*(dec_row_mt_sync->cur_sb_col)) * rows));
// Set up nsync.
dec_row_mt_sync->sync_range = get_sync_range(cm->width);
}
// Deallocate decoder row synchronization related mutex and data
void av1_dec_row_mt_dealloc(AV1DecRowMTSync *dec_row_mt_sync) {
if (dec_row_mt_sync != NULL) {
#if CONFIG_MULTITHREAD
int i;
if (dec_row_mt_sync->mutex_ != NULL) {
for (i = 0; i < dec_row_mt_sync->allocated_sb_rows; ++i) {
pthread_mutex_destroy(&dec_row_mt_sync->mutex_[i]);
}
aom_free(dec_row_mt_sync->mutex_);
}
if (dec_row_mt_sync->cond_ != NULL) {
for (i = 0; i < dec_row_mt_sync->allocated_sb_rows; ++i) {
pthread_cond_destroy(&dec_row_mt_sync->cond_[i]);
}
aom_free(dec_row_mt_sync->cond_);
}
#endif // CONFIG_MULTITHREAD
aom_free(dec_row_mt_sync->cur_sb_col);
// clear the structure as the source of this call may be a resize in which
// case this call will be followed by an _alloc() which may fail.
av1_zero(*dec_row_mt_sync);
}
}
static inline void sync_read(AV1DecRowMTSync *const dec_row_mt_sync, int r,
int c) {
#if CONFIG_MULTITHREAD
const int nsync = dec_row_mt_sync->sync_range;
if (r && !(c & (nsync - 1))) {
pthread_mutex_t *const mutex = &dec_row_mt_sync->mutex_[r - 1];
pthread_mutex_lock(mutex);
while (c > dec_row_mt_sync->cur_sb_col[r - 1] - nsync -
dec_row_mt_sync->intrabc_extra_top_right_sb_delay) {
pthread_cond_wait(&dec_row_mt_sync->cond_[r - 1], mutex);
}
pthread_mutex_unlock(mutex);
}
#else
(void)dec_row_mt_sync;
(void)r;
(void)c;
#endif // CONFIG_MULTITHREAD
}
static inline void sync_write(AV1DecRowMTSync *const dec_row_mt_sync, int r,
int c, const int sb_cols) {
#if CONFIG_MULTITHREAD
const int nsync = dec_row_mt_sync->sync_range;
int cur;
int sig = 1;
if (c < sb_cols - 1) {
cur = c;
if (c % nsync) sig = 0;
} else {
cur = sb_cols + nsync + dec_row_mt_sync->intrabc_extra_top_right_sb_delay;
}
if (sig) {
pthread_mutex_lock(&dec_row_mt_sync->mutex_[r]);
dec_row_mt_sync->cur_sb_col[r] = cur;
pthread_cond_signal(&dec_row_mt_sync->cond_[r]);
pthread_mutex_unlock(&dec_row_mt_sync->mutex_[r]);
}
#else
(void)dec_row_mt_sync;
(void)r;
(void)c;
(void)sb_cols;
#endif // CONFIG_MULTITHREAD
}
static inline void signal_decoding_done_for_erroneous_row(
AV1Decoder *const pbi, const MACROBLOCKD *const xd) {
AV1_COMMON *const cm = &pbi->common;
const TileInfo *const tile = &xd->tile;
const int sb_row_in_tile =
((xd->mi_row - tile->mi_row_start) >> cm->seq_params->mib_size_log2);
const int sb_cols_in_tile = av1_get_sb_cols_in_tile(cm, tile);
TileDataDec *const tile_data =
pbi->tile_data + tile->tile_row * cm->tiles.cols + tile->tile_col;
AV1DecRowMTSync *dec_row_mt_sync = &tile_data->dec_row_mt_sync;
sync_write(dec_row_mt_sync, sb_row_in_tile, sb_cols_in_tile - 1,
sb_cols_in_tile);
}
static inline void decode_tile_sb_row(AV1Decoder *pbi, ThreadData *const td,
const TileInfo *tile_info,
const int mi_row) {
AV1_COMMON *const cm = &pbi->common;
const int num_planes = av1_num_planes(cm);
TileDataDec *const tile_data = pbi->tile_data +
tile_info->tile_row * cm->tiles.cols +
tile_info->tile_col;
const int sb_cols_in_tile = av1_get_sb_cols_in_tile(cm, tile_info);
const int sb_row_in_tile =
(mi_row - tile_info->mi_row_start) >> cm->seq_params->mib_size_log2;
int sb_col_in_tile = 0;
int row_mt_exit = 0;
for (int mi_col = tile_info->mi_col_start; mi_col < tile_info->mi_col_end;
mi_col += cm->seq_params->mib_size, sb_col_in_tile++) {
set_cb_buffer(pbi, &td->dcb, pbi->cb_buffer_base, num_planes, mi_row,
mi_col);
sync_read(&tile_data->dec_row_mt_sync, sb_row_in_tile, sb_col_in_tile);
#if CONFIG_MULTITHREAD
pthread_mutex_lock(pbi->row_mt_mutex_);
#endif
row_mt_exit = pbi->frame_row_mt_info.row_mt_exit;
#if CONFIG_MULTITHREAD
pthread_mutex_unlock(pbi->row_mt_mutex_);
#endif
if (!row_mt_exit) {
// Decoding of the super-block
decode_partition(pbi, td, mi_row, mi_col, td->bit_reader,
cm->seq_params->sb_size, 0x2);
}
sync_write(&tile_data->dec_row_mt_sync, sb_row_in_tile, sb_col_in_tile,
sb_cols_in_tile);
}
}
static int check_trailing_bits_after_symbol_coder(aom_reader *r) {
if (aom_reader_has_overflowed(r)) return -1;
uint32_t nb_bits = aom_reader_tell(r);
uint32_t nb_bytes = (nb_bits + 7) >> 3;
const uint8_t *p = aom_reader_find_begin(r) + nb_bytes;
// aom_reader_tell() returns 1 for a newly initialized decoder, and the
// return value only increases as values are decoded. So nb_bits > 0, and
// thus p > p_begin. Therefore accessing p[-1] is safe.
uint8_t last_byte = p[-1];
uint8_t pattern = 128 >> ((nb_bits - 1) & 7);
if ((last_byte & (2 * pattern - 1)) != pattern) return -1;
// Make sure that all padding bytes are zero as required by the spec.
const uint8_t *p_end = aom_reader_find_end(r);
while (p < p_end) {
if (*p != 0) return -1;
p++;
}
return 0;
}
static inline void set_decode_func_pointers(ThreadData *td,
int parse_decode_flag) {
td->read_coeffs_tx_intra_block_visit = decode_block_void;
td->predict_and_recon_intra_block_visit = decode_block_void;
td->read_coeffs_tx_inter_block_visit = decode_block_void;
td->inverse_tx_inter_block_visit = decode_block_void;
td->predict_inter_block_visit = predict_inter_block_void;
td->cfl_store_inter_block_visit = cfl_store_inter_block_void;
if (parse_decode_flag & 0x1) {
td->read_coeffs_tx_intra_block_visit = read_coeffs_tx_intra_block;
td->read_coeffs_tx_inter_block_visit = av1_read_coeffs_txb;
}
if (parse_decode_flag & 0x2) {
td->predict_and_recon_intra_block_visit =
predict_and_reconstruct_intra_block;
td->inverse_tx_inter_block_visit = inverse_transform_inter_block;
td->predict_inter_block_visit = predict_inter_block;
td->cfl_store_inter_block_visit = cfl_store_inter_block;
}
}
static inline void decode_tile(AV1Decoder *pbi, ThreadData *const td,
int tile_row, int tile_col) {
TileInfo tile_info;
AV1_COMMON *const cm = &pbi->common;
const int num_planes = av1_num_planes(cm);
av1_tile_set_row(&tile_info, cm, tile_row);
av1_tile_set_col(&tile_info, cm, tile_col);
DecoderCodingBlock *const dcb = &td->dcb;
MACROBLOCKD *const xd = &dcb->xd;
av1_zero_above_context(cm, xd, tile_info.mi_col_start, tile_info.mi_col_end,
tile_row);
av1_reset_loop_filter_delta(xd, num_planes);
av1_reset_loop_restoration(xd, num_planes);
for (int mi_row = tile_info.mi_row_start; mi_row < tile_info.mi_row_end;
mi_row += cm->seq_params->mib_size) {
av1_zero_left_context(xd);
for (int mi_col = tile_info.mi_col_start; mi_col < tile_info.mi_col_end;
mi_col += cm->seq_params->mib_size) {
set_cb_buffer(pbi, dcb, &td->cb_buffer_base, num_planes, 0, 0);
// Bit-stream parsing and decoding of the superblock
decode_partition(pbi, td, mi_row, mi_col, td->bit_reader,
cm->seq_params->sb_size, 0x3);
if (aom_reader_has_overflowed(td->bit_reader)) {
aom_merge_corrupted_flag(&dcb->corrupted, 1);
return;
}
}
}
int corrupted =
(check_trailing_bits_after_symbol_coder(td->bit_reader)) ? 1 : 0;
aom_merge_corrupted_flag(&dcb->corrupted, corrupted);
}
static const uint8_t *decode_tiles(AV1Decoder *pbi, const uint8_t *data,
const uint8_t *data_end, int start_tile,
int end_tile) {
AV1_COMMON *const cm = &pbi->common;
ThreadData *const td = &pbi->td;
CommonTileParams *const tiles = &cm->tiles;
const int tile_cols = tiles->cols;
const int tile_rows = tiles->rows;
const int n_tiles = tile_cols * tile_rows;
TileBufferDec(*const tile_buffers)[MAX_TILE_COLS] = pbi->tile_buffers;
const int dec_tile_row = AOMMIN(pbi->dec_tile_row, tile_rows);
const int single_row = pbi->dec_tile_row >= 0;
const int dec_tile_col = AOMMIN(pbi->dec_tile_col, tile_cols);
const int single_col = pbi->dec_tile_col >= 0;
int tile_rows_start;
int tile_rows_end;
int tile_cols_start;
int tile_cols_end;
int inv_col_order;
int inv_row_order;
int tile_row, tile_col;
uint8_t allow_update_cdf;
const uint8_t *raw_data_end = NULL;
if (tiles->large_scale) {
tile_rows_start = single_row ? dec_tile_row : 0;
tile_rows_end = single_row ? dec_tile_row + 1 : tile_rows;
tile_cols_start = single_col ? dec_tile_col : 0;
tile_cols_end = single_col ? tile_cols_start + 1 : tile_cols;
inv_col_order = pbi->inv_tile_order && !single_col;
inv_row_order = pbi->inv_tile_order && !single_row;
allow_update_cdf = 0;
} else {
tile_rows_start = 0;
tile_rows_end = tile_rows;
tile_cols_start = 0;
tile_cols_end = tile_cols;
inv_col_order = pbi->inv_tile_order;
inv_row_order = pbi->inv_tile_order;
allow_update_cdf = 1;
}
// No tiles to decode.
if (tile_rows_end <= tile_rows_start || tile_cols_end <= tile_cols_start ||
// First tile is larger than end_tile.
tile_rows_start * tiles->cols + tile_cols_start > end_tile ||
// Last tile is smaller than start_tile.
(tile_rows_end - 1) * tiles->cols + tile_cols_end - 1 < start_tile)
return data;
allow_update_cdf = allow_update_cdf && !cm->features.disable_cdf_update;
assert(tile_rows <= MAX_TILE_ROWS);
assert(tile_cols <= MAX_TILE_COLS);
#if EXT_TILE_DEBUG
if (tiles->large_scale && !pbi->ext_tile_debug)
raw_data_end = get_ls_single_tile_buffer(pbi, data, tile_buffers);
else if (tiles->large_scale && pbi->ext_tile_debug)
raw_data_end = get_ls_tile_buffers(pbi, data, data_end, tile_buffers);
else
#endif // EXT_TILE_DEBUG
get_tile_buffers(pbi, data, data_end, tile_buffers, start_tile, end_tile);
if (pbi->tile_data == NULL || n_tiles != pbi->allocated_tiles) {
decoder_alloc_tile_data(pbi, n_tiles);
}
if (pbi->dcb.xd.seg_mask == NULL)
CHECK_MEM_ERROR(cm, pbi->dcb.xd.seg_mask,
(uint8_t *)aom_memalign(
16, 2 * MAX_SB_SQUARE * sizeof(*pbi->dcb.xd.seg_mask)));
#if CONFIG_ACCOUNTING
if (pbi->acct_enabled) {
aom_accounting_reset(&pbi->accounting);
}
#endif
set_decode_func_pointers(&pbi->td, 0x3);
// Load all tile information into thread_data.
td->dcb = pbi->dcb;
td->dcb.corrupted = 0;
td->dcb.mc_buf[0] = td->mc_buf[0];
td->dcb.mc_buf[1] = td->mc_buf[1];
td->dcb.xd.tmp_conv_dst = td->tmp_conv_dst;
for (int j = 0; j < 2; ++j) {
td->dcb.xd.tmp_obmc_bufs[j] = td->tmp_obmc_bufs[j];
}
for (tile_row = tile_rows_start; tile_row < tile_rows_end; ++tile_row) {
const int row = inv_row_order ? tile_rows - 1 - tile_row : tile_row;
for (tile_col = tile_cols_start; tile_col < tile_cols_end; ++tile_col) {
const int col = inv_col_order ? tile_cols - 1 - tile_col : tile_col;
TileDataDec *const tile_data = pbi->tile_data + row * tiles->cols + col;
const TileBufferDec *const tile_bs_buf = &tile_buffers[row][col];
if (row * tiles->cols + col < start_tile ||
row * tiles->cols + col > end_tile)
continue;
td->bit_reader = &tile_data->bit_reader;
av1_zero(td->cb_buffer_base.dqcoeff);
av1_tile_init(&td->dcb.xd.tile, cm, row, col);
td->dcb.xd.current_base_qindex = cm->quant_params.base_qindex;
setup_bool_decoder(&td->dcb.xd, tile_bs_buf->data, data_end,
tile_bs_buf->size, &pbi->error, td->bit_reader,
allow_update_cdf);
#if CONFIG_ACCOUNTING
if (pbi->acct_enabled) {
td->bit_reader->accounting = &pbi->accounting;
td->bit_reader->accounting->last_tell_frac =
aom_reader_tell_frac(td->bit_reader);
} else {
td->bit_reader->accounting = NULL;
}
#endif
av1_init_macroblockd(cm, &td->dcb.xd);
av1_init_above_context(&cm->above_contexts, av1_num_planes(cm), row,
&td->dcb.xd);
// Initialise the tile context from the frame context
tile_data->tctx = *cm->fc;
td->dcb.xd.tile_ctx = &tile_data->tctx;
// decode tile
decode_tile(pbi, td, row, col);
aom_merge_corrupted_flag(&pbi->dcb.corrupted, td->dcb.corrupted);
if (pbi->dcb.corrupted)
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Failed to decode tile data");
}
}
if (tiles->large_scale) {
if (n_tiles == 1) {
// Find the end of the single tile buffer
return aom_reader_find_end(&pbi->tile_data->bit_reader);
}
// Return the end of the last tile buffer
return raw_data_end;
}
TileDataDec *const tile_data = pbi->tile_data + end_tile;
return aom_reader_find_end(&tile_data->bit_reader);
}
static TileJobsDec *get_dec_job_info(AV1DecTileMT *tile_mt_info) {
TileJobsDec *cur_job_info = NULL;
#if CONFIG_MULTITHREAD
pthread_mutex_lock(tile_mt_info->job_mutex);
if (tile_mt_info->jobs_dequeued < tile_mt_info->jobs_enqueued) {
cur_job_info = tile_mt_info->job_queue + tile_mt_info->jobs_dequeued;
tile_mt_info->jobs_dequeued++;
}
pthread_mutex_unlock(tile_mt_info->job_mutex);
#else
(void)tile_mt_info;
#endif
return cur_job_info;
}
static inline void tile_worker_hook_init(AV1Decoder *const pbi,
DecWorkerData *const thread_data,
const TileBufferDec *const tile_buffer,
TileDataDec *const tile_data,
uint8_t allow_update_cdf) {
AV1_COMMON *cm = &pbi->common;
ThreadData *const td = thread_data->td;
int tile_row = tile_data->tile_info.tile_row;
int tile_col = tile_data->tile_info.tile_col;
td->bit_reader = &tile_data->bit_reader;
av1_zero(td->cb_buffer_base.dqcoeff);
MACROBLOCKD *const xd = &td->dcb.xd;
av1_tile_init(&xd->tile, cm, tile_row, tile_col);
xd->current_base_qindex = cm->quant_params.base_qindex;
setup_bool_decoder(xd, tile_buffer->data, thread_data->data_end,
tile_buffer->size, &thread_data->error_info,
td->bit_reader, allow_update_cdf);
#if CONFIG_ACCOUNTING
if (pbi->acct_enabled) {
td->bit_reader->accounting = &pbi->accounting;
td->bit_reader->accounting->last_tell_frac =
aom_reader_tell_frac(td->bit_reader);
} else {
td->bit_reader->accounting = NULL;
}
#endif
av1_init_macroblockd(cm, xd);
xd->error_info = &thread_data->error_info;
av1_init_above_context(&cm->above_contexts, av1_num_planes(cm), tile_row, xd);
// Initialise the tile context from the frame context
tile_data->tctx = *cm->fc;
xd->tile_ctx = &tile_data->tctx;
#if CONFIG_ACCOUNTING
if (pbi->acct_enabled) {
tile_data->bit_reader.accounting->last_tell_frac =
aom_reader_tell_frac(&tile_data->bit_reader);
}
#endif
}
static int tile_worker_hook(void *arg1, void *arg2) {
DecWorkerData *const thread_data = (DecWorkerData *)arg1;
AV1Decoder *const pbi = (AV1Decoder *)arg2;
AV1_COMMON *cm = &pbi->common;
ThreadData *const td = thread_data->td;
uint8_t allow_update_cdf;
// The jmp_buf is valid only for the duration of the function that calls
// setjmp(). Therefore, this function must reset the 'setjmp' field to 0
// before it returns.
if (setjmp(thread_data->error_info.jmp)) {
thread_data->error_info.setjmp = 0;
thread_data->td->dcb.corrupted = 1;
return 0;
}
thread_data->error_info.setjmp = 1;
allow_update_cdf = cm->tiles.large_scale ? 0 : 1;
allow_update_cdf = allow_update_cdf && !cm->features.disable_cdf_update;
set_decode_func_pointers(td, 0x3);
assert(cm->tiles.cols > 0);
while (!td->dcb.corrupted) {
TileJobsDec *cur_job_info = get_dec_job_info(&pbi->tile_mt_info);
if (cur_job_info != NULL) {
const TileBufferDec *const tile_buffer = cur_job_info->tile_buffer;
TileDataDec *const tile_data = cur_job_info->tile_data;
tile_worker_hook_init(pbi, thread_data, tile_buffer, tile_data,
allow_update_cdf);
// decode tile
int tile_row = tile_data->tile_info.tile_row;
int tile_col = tile_data->tile_info.tile_col;
decode_tile(pbi, td, tile_row, tile_col);
} else {
break;
}
}
thread_data->error_info.setjmp = 0;
return !td->dcb.corrupted;
}
static inline int get_max_row_mt_workers_per_tile(AV1_COMMON *cm,
const TileInfo *tile) {
// NOTE: Currently value of max workers is calculated based
// on the parse and decode time. As per the theoretical estimate
// when percentage of parse time is equal to percentage of decode
// time, number of workers needed to parse + decode a tile can not
// exceed more than 2.
// TODO(any): Modify this value if parsing is optimized in future.
int sb_rows = av1_get_sb_rows_in_tile(cm, tile);
int max_workers =
sb_rows == 1 ? AOM_MIN_THREADS_PER_TILE : AOM_MAX_THREADS_PER_TILE;
return max_workers;
}
// The caller must hold pbi->row_mt_mutex_ when calling this function.
// Returns 1 if either the next job is stored in *next_job_info or 1 is stored
// in *end_of_frame.
// NOTE: The caller waits on pbi->row_mt_cond_ if this function returns 0.
// The return value of this function depends on the following variables:
// - frame_row_mt_info->mi_rows_parse_done
// - frame_row_mt_info->mi_rows_decode_started
// - frame_row_mt_info->row_mt_exit
// Therefore we may need to signal or broadcast pbi->row_mt_cond_ if any of
// these variables is modified.
static int get_next_job_info(AV1Decoder *const pbi,
AV1DecRowMTJobInfo *next_job_info,
int *end_of_frame) {
AV1_COMMON *cm = &pbi->common;
TileDataDec *tile_data;
AV1DecRowMTSync *dec_row_mt_sync;
AV1DecRowMTInfo *frame_row_mt_info = &pbi->frame_row_mt_info;
const int tile_rows_start = frame_row_mt_info->tile_rows_start;
const int tile_rows_end = frame_row_mt_info->tile_rows_end;
const int tile_cols_start = frame_row_mt_info->tile_cols_start;
const int tile_cols_end = frame_row_mt_info->tile_cols_end;
const int start_tile = frame_row_mt_info->start_tile;
const int end_tile = frame_row_mt_info->end_tile;
const int sb_mi_size = mi_size_wide[cm->seq_params->sb_size];
int num_mis_to_decode, num_threads_working;
int num_mis_waiting_for_decode;
int min_threads_working = INT_MAX;
int max_mis_to_decode = 0;
int tile_row_idx, tile_col_idx;
int tile_row = -1;
int tile_col = -1;
memset(next_job_info, 0, sizeof(*next_job_info));
// Frame decode is completed or error is encountered.
*end_of_frame = (frame_row_mt_info->mi_rows_decode_started ==
frame_row_mt_info->mi_rows_to_decode) ||
(frame_row_mt_info->row_mt_exit == 1);
if (*end_of_frame) {
return 1;
}
// Decoding cannot start as bit-stream parsing is not complete.
assert(frame_row_mt_info->mi_rows_parse_done >=
frame_row_mt_info->mi_rows_decode_started);
if (frame_row_mt_info->mi_rows_parse_done ==
frame_row_mt_info->mi_rows_decode_started)
return 0;
// Choose the tile to decode.
for (tile_row_idx = tile_rows_start; tile_row_idx < tile_rows_end;
++tile_row_idx) {
for (tile_col_idx = tile_cols_start; tile_col_idx < tile_cols_end;
++tile_col_idx) {
if (tile_row_idx * cm->tiles.cols + tile_col_idx < start_tile ||
tile_row_idx * cm->tiles.cols + tile_col_idx > end_tile)
continue;
tile_data = pbi->tile_data + tile_row_idx * cm->tiles.cols + tile_col_idx;
dec_row_mt_sync = &tile_data->dec_row_mt_sync;
num_threads_working = dec_row_mt_sync->num_threads_working;
num_mis_waiting_for_decode = (dec_row_mt_sync->mi_rows_parse_done -
dec_row_mt_sync->mi_rows_decode_started) *
dec_row_mt_sync->mi_cols;
num_mis_to_decode =
(dec_row_mt_sync->mi_rows - dec_row_mt_sync->mi_rows_decode_started) *
dec_row_mt_sync->mi_cols;
assert(num_mis_to_decode >= num_mis_waiting_for_decode);
// Pick the tile which has minimum number of threads working on it.
if (num_mis_waiting_for_decode > 0) {
if (num_threads_working < min_threads_working) {
min_threads_working = num_threads_working;
max_mis_to_decode = 0;
}
if (num_threads_working == min_threads_working &&
num_mis_to_decode > max_mis_to_decode &&
num_threads_working <
get_max_row_mt_workers_per_tile(cm, &tile_data->tile_info)) {
max_mis_to_decode = num_mis_to_decode;
tile_row = tile_row_idx;
tile_col = tile_col_idx;
}
}
}
}
// No job found to process
if (tile_row == -1 || tile_col == -1) return 0;
tile_data = pbi->tile_data + tile_row * cm->tiles.cols + tile_col;
dec_row_mt_sync = &tile_data->dec_row_mt_sync;
next_job_info->tile_row = tile_row;
next_job_info->tile_col = tile_col;
next_job_info->mi_row = dec_row_mt_sync->mi_rows_decode_started +
tile_data->tile_info.mi_row_start;
dec_row_mt_sync->num_threads_working++;
dec_row_mt_sync->mi_rows_decode_started += sb_mi_size;
frame_row_mt_info->mi_rows_decode_started += sb_mi_size;
assert(frame_row_mt_info->mi_rows_parse_done >=
frame_row_mt_info->mi_rows_decode_started);
#if CONFIG_MULTITHREAD
if (frame_row_mt_info->mi_rows_decode_started ==
frame_row_mt_info->mi_rows_to_decode) {
pthread_cond_broadcast(pbi->row_mt_cond_);
}
#endif
return 1;
}
static inline void signal_parse_sb_row_done(AV1Decoder *const pbi,
TileDataDec *const tile_data,
const int sb_mi_size) {
AV1DecRowMTInfo *frame_row_mt_info = &pbi->frame_row_mt_info;
#if CONFIG_MULTITHREAD
pthread_mutex_lock(pbi->row_mt_mutex_);
#endif
assert(frame_row_mt_info->mi_rows_parse_done >=
frame_row_mt_info->mi_rows_decode_started);
tile_data->dec_row_mt_sync.mi_rows_parse_done += sb_mi_size;
frame_row_mt_info->mi_rows_parse_done += sb_mi_size;
#if CONFIG_MULTITHREAD
// A new decode job is available. Wake up one worker thread to handle the
// new decode job.
// NOTE: This assumes we bump mi_rows_parse_done and mi_rows_decode_started
// by the same increment (sb_mi_size).
pthread_cond_signal(pbi->row_mt_cond_);
pthread_mutex_unlock(pbi->row_mt_mutex_);
#endif
}
// This function is very similar to decode_tile(). It would be good to figure
// out how to share code.
static inline void parse_tile_row_mt(AV1Decoder *pbi, ThreadData *const td,
TileDataDec *const tile_data) {
AV1_COMMON *const cm = &pbi->common;
const int sb_mi_size = mi_size_wide[cm->seq_params->sb_size];
const int num_planes = av1_num_planes(cm);
const TileInfo *const tile_info = &tile_data->tile_info;
int tile_row = tile_info->tile_row;
DecoderCodingBlock *const dcb = &td->dcb;
MACROBLOCKD *const xd = &dcb->xd;
av1_zero_above_context(cm, xd, tile_info->mi_col_start, tile_info->mi_col_end,
tile_row);
av1_reset_loop_filter_delta(xd, num_planes);
av1_reset_loop_restoration(xd, num_planes);
for (int mi_row = tile_info->mi_row_start; mi_row < tile_info->mi_row_end;
mi_row += cm->seq_params->mib_size) {
av1_zero_left_context(xd);
for (int mi_col = tile_info->mi_col_start; mi_col < tile_info->mi_col_end;
mi_col += cm->seq_params->mib_size) {
set_cb_buffer(pbi, dcb, pbi->cb_buffer_base, num_planes, mi_row, mi_col);
// Bit-stream parsing of the superblock
decode_partition(pbi, td, mi_row, mi_col, td->bit_reader,
cm->seq_params->sb_size, 0x1);
if (aom_reader_has_overflowed(td->bit_reader)) {
aom_merge_corrupted_flag(&dcb->corrupted, 1);
return;
}
}
signal_parse_sb_row_done(pbi, tile_data, sb_mi_size);
}
int corrupted =
(check_trailing_bits_after_symbol_coder(td->bit_reader)) ? 1 : 0;
aom_merge_corrupted_flag(&dcb->corrupted, corrupted);
}
static int row_mt_worker_hook(void *arg1, void *arg2) {
DecWorkerData *const thread_data = (DecWorkerData *)arg1;
AV1Decoder *const pbi = (AV1Decoder *)arg2;
ThreadData *const td = thread_data->td;
uint8_t allow_update_cdf;
AV1DecRowMTInfo *frame_row_mt_info = &pbi->frame_row_mt_info;
td->dcb.corrupted = 0;
// The jmp_buf is valid only for the duration of the function that calls
// setjmp(). Therefore, this function must reset the 'setjmp' field to 0
// before it returns.
if (setjmp(thread_data->error_info.jmp)) {
thread_data->error_info.setjmp = 0;
thread_data->td->dcb.corrupted = 1;
#if CONFIG_MULTITHREAD
pthread_mutex_lock(pbi->row_mt_mutex_);
#endif
frame_row_mt_info->row_mt_exit = 1;
#if CONFIG_MULTITHREAD
pthread_cond_broadcast(pbi->row_mt_cond_);
pthread_mutex_unlock(pbi->row_mt_mutex_);
#endif
// If any SB row (erroneous row) processed by a thread encounters an
// internal error, there is a need to indicate other threads that decoding
// of the erroneous row is complete. This ensures that other threads which
// wait upon the completion of SB's present in erroneous row are not waiting
// indefinitely.
signal_decoding_done_for_erroneous_row(pbi, &thread_data->td->dcb.xd);
return 0;
}
thread_data->error_info.setjmp = 1;
AV1_COMMON *cm = &pbi->common;
allow_update_cdf = cm->tiles.large_scale ? 0 : 1;
allow_update_cdf = allow_update_cdf && !cm->features.disable_cdf_update;
set_decode_func_pointers(td, 0x1);
assert(cm->tiles.cols > 0);
while (!td->dcb.corrupted) {
TileJobsDec *cur_job_info = get_dec_job_info(&pbi->tile_mt_info);
if (cur_job_info != NULL) {
const TileBufferDec *const tile_buffer = cur_job_info->tile_buffer;
TileDataDec *const tile_data = cur_job_info->tile_data;
tile_worker_hook_init(pbi, thread_data, tile_buffer, tile_data,
allow_update_cdf);
#if CONFIG_MULTITHREAD
pthread_mutex_lock(pbi->row_mt_mutex_);
#endif
tile_data->dec_row_mt_sync.num_threads_working++;
#if CONFIG_MULTITHREAD
pthread_mutex_unlock(pbi->row_mt_mutex_);
#endif
// decode tile
parse_tile_row_mt(pbi, td, tile_data);
#if CONFIG_MULTITHREAD
pthread_mutex_lock(pbi->row_mt_mutex_);
#endif
tile_data->dec_row_mt_sync.num_threads_working--;
#if CONFIG_MULTITHREAD
pthread_mutex_unlock(pbi->row_mt_mutex_);
#endif
} else {
break;
}
}
if (td->dcb.corrupted) {
thread_data->error_info.setjmp = 0;
#if CONFIG_MULTITHREAD
pthread_mutex_lock(pbi->row_mt_mutex_);
#endif
frame_row_mt_info->row_mt_exit = 1;
#if CONFIG_MULTITHREAD
pthread_cond_broadcast(pbi->row_mt_cond_);
pthread_mutex_unlock(pbi->row_mt_mutex_);
#endif
return 0;
}
set_decode_func_pointers(td, 0x2);
while (1) {
AV1DecRowMTJobInfo next_job_info;
int end_of_frame = 0;
#if CONFIG_MULTITHREAD
pthread_mutex_lock(pbi->row_mt_mutex_);
#endif
while (!get_next_job_info(pbi, &next_job_info, &end_of_frame)) {
#if CONFIG_MULTITHREAD
pthread_cond_wait(pbi->row_mt_cond_, pbi->row_mt_mutex_);
#endif
}
#if CONFIG_MULTITHREAD
pthread_mutex_unlock(pbi->row_mt_mutex_);
#endif
if (end_of_frame) break;
int tile_row = next_job_info.tile_row;
int tile_col = next_job_info.tile_col;
int mi_row = next_job_info.mi_row;
TileDataDec *tile_data =
pbi->tile_data + tile_row * cm->tiles.cols + tile_col;
AV1DecRowMTSync *dec_row_mt_sync = &tile_data->dec_row_mt_sync;
av1_tile_init(&td->dcb.xd.tile, cm, tile_row, tile_col);
av1_init_macroblockd(cm, &td->dcb.xd);
td->dcb.xd.error_info = &thread_data->error_info;
decode_tile_sb_row(pbi, td, &tile_data->tile_info, mi_row);
#if CONFIG_MULTITHREAD
pthread_mutex_lock(pbi->row_mt_mutex_);
#endif
dec_row_mt_sync->num_threads_working--;
#if CONFIG_MULTITHREAD
pthread_mutex_unlock(pbi->row_mt_mutex_);
#endif
}
thread_data->error_info.setjmp = 0;
return !td->dcb.corrupted;
}
// sorts in descending order
static int compare_tile_buffers(const void *a, const void *b) {
const TileJobsDec *const buf1 = (const TileJobsDec *)a;
const TileJobsDec *const buf2 = (const TileJobsDec *)b;
return (((int)buf2->tile_buffer->size) - ((int)buf1->tile_buffer->size));
}
static inline void enqueue_tile_jobs(AV1Decoder *pbi, AV1_COMMON *cm,
int tile_rows_start, int tile_rows_end,
int tile_cols_start, int tile_cols_end,
int start_tile, int end_tile) {
AV1DecTileMT *tile_mt_info = &pbi->tile_mt_info;
TileJobsDec *tile_job_queue = tile_mt_info->job_queue;
tile_mt_info->jobs_enqueued = 0;
tile_mt_info->jobs_dequeued = 0;
for (int row = tile_rows_start; row < tile_rows_end; row++) {
for (int col = tile_cols_start; col < tile_cols_end; col++) {
if (row * cm->tiles.cols + col < start_tile ||
row * cm->tiles.cols + col > end_tile)
continue;
tile_job_queue->tile_buffer = &pbi->tile_buffers[row][col];
tile_job_queue->tile_data = pbi->tile_data + row * cm->tiles.cols + col;
tile_job_queue++;
tile_mt_info->jobs_enqueued++;
}
}
}
static inline void alloc_dec_jobs(AV1DecTileMT *tile_mt_info, AV1_COMMON *cm,
int tile_rows, int tile_cols) {
tile_mt_info->alloc_tile_rows = tile_rows;
tile_mt_info->alloc_tile_cols = tile_cols;
int num_tiles = tile_rows * tile_cols;
#if CONFIG_MULTITHREAD
{
CHECK_MEM_ERROR(cm, tile_mt_info->job_mutex,
aom_malloc(sizeof(*tile_mt_info->job_mutex) * num_tiles));
for (int i = 0; i < num_tiles; i++) {
pthread_mutex_init(&tile_mt_info->job_mutex[i], NULL);
}
}
#endif
CHECK_MEM_ERROR(cm, tile_mt_info->job_queue,
aom_malloc(sizeof(*tile_mt_info->job_queue) * num_tiles));
}
void av1_free_mc_tmp_buf(ThreadData *thread_data) {
int ref;
for (ref = 0; ref < 2; ref++) {
if (thread_data->mc_buf_use_highbd)
aom_free(CONVERT_TO_SHORTPTR(thread_data->mc_buf[ref]));
else
aom_free(thread_data->mc_buf[ref]);
thread_data->mc_buf[ref] = NULL;
}
thread_data->mc_buf_size = 0;
thread_data->mc_buf_use_highbd = 0;
aom_free(thread_data->tmp_conv_dst);
thread_data->tmp_conv_dst = NULL;
aom_free(thread_data->seg_mask);
thread_data->seg_mask = NULL;
for (int i = 0; i < 2; ++i) {
aom_free(thread_data->tmp_obmc_bufs[i]);
thread_data->tmp_obmc_bufs[i] = NULL;
}
}
static inline void allocate_mc_tmp_buf(AV1_COMMON *const cm,
ThreadData *thread_data, int buf_size,
int use_highbd) {
for (int ref = 0; ref < 2; ref++) {
// The mc_buf/hbd_mc_buf must be zeroed to fix a intermittent valgrind error
// 'Conditional jump or move depends on uninitialised value' from the loop
// filter. Uninitialized reads in convolve function (e.g. horiz_4tap path in
// av1_convolve_2d_sr_avx2()) from mc_buf/hbd_mc_buf are seen to be the
// potential reason for this issue.
if (use_highbd) {
uint16_t *hbd_mc_buf;
CHECK_MEM_ERROR(cm, hbd_mc_buf, (uint16_t *)aom_memalign(16, buf_size));
memset(hbd_mc_buf, 0, buf_size);
thread_data->mc_buf[ref] = CONVERT_TO_BYTEPTR(hbd_mc_buf);
} else {
CHECK_MEM_ERROR(cm, thread_data->mc_buf[ref],
(uint8_t *)aom_memalign(16, buf_size));
memset(thread_data->mc_buf[ref], 0, buf_size);
}
}
thread_data->mc_buf_size = buf_size;
thread_data->mc_buf_use_highbd = use_highbd;
CHECK_MEM_ERROR(cm, thread_data->tmp_conv_dst,
aom_memalign(32, MAX_SB_SIZE * MAX_SB_SIZE *
sizeof(*thread_data->tmp_conv_dst)));
CHECK_MEM_ERROR(cm, thread_data->seg_mask,
(uint8_t *)aom_memalign(
16, 2 * MAX_SB_SQUARE * sizeof(*thread_data->seg_mask)));
for (int i = 0; i < 2; ++i) {
CHECK_MEM_ERROR(
cm, thread_data->tmp_obmc_bufs[i],
aom_memalign(16, 2 * MAX_MB_PLANE * MAX_SB_SQUARE *
sizeof(*thread_data->tmp_obmc_bufs[i])));
}
}
static inline void reset_dec_workers(AV1Decoder *pbi, AVxWorkerHook worker_hook,
int num_workers) {
const AVxWorkerInterface *const winterface = aom_get_worker_interface();
// Reset tile decoding hook
for (int worker_idx = 0; worker_idx < num_workers; ++worker_idx) {
AVxWorker *const worker = &pbi->tile_workers[worker_idx];
DecWorkerData *const thread_data = pbi->thread_data + worker_idx;
thread_data->td->dcb = pbi->dcb;
thread_data->td->dcb.corrupted = 0;
thread_data->td->dcb.mc_buf[0] = thread_data->td->mc_buf[0];
thread_data->td->dcb.mc_buf[1] = thread_data->td->mc_buf[1];
thread_data->td->dcb.xd.tmp_conv_dst = thread_data->td->tmp_conv_dst;
if (worker_idx)
thread_data->td->dcb.xd.seg_mask = thread_data->td->seg_mask;
for (int j = 0; j < 2; ++j) {
thread_data->td->dcb.xd.tmp_obmc_bufs[j] =
thread_data->td->tmp_obmc_bufs[j];
}
winterface->sync(worker);
worker->hook = worker_hook;
worker->data1 = thread_data;
worker->data2 = pbi;
}
#if CONFIG_ACCOUNTING
if (pbi->acct_enabled) {
aom_accounting_reset(&pbi->accounting);
}
#endif
}
static inline void launch_dec_workers(AV1Decoder *pbi, const uint8_t *data_end,
int num_workers) {
const AVxWorkerInterface *const winterface = aom_get_worker_interface();
for (int worker_idx = num_workers - 1; worker_idx >= 0; --worker_idx) {
AVxWorker *const worker = &pbi->tile_workers[worker_idx];
DecWorkerData *const thread_data = (DecWorkerData *)worker->data1;
thread_data->data_end = data_end;
worker->had_error = 0;
if (worker_idx == 0) {
winterface->execute(worker);
} else {
winterface->launch(worker);
}
}
}
static inline void sync_dec_workers(AV1Decoder *pbi, int num_workers) {
const AVxWorkerInterface *const winterface = aom_get_worker_interface();
int corrupted = 0;
for (int worker_idx = num_workers; worker_idx > 0; --worker_idx) {
AVxWorker *const worker = &pbi->tile_workers[worker_idx - 1];
aom_merge_corrupted_flag(&corrupted, !winterface->sync(worker));
}
pbi->dcb.corrupted = corrupted;
}
static inline void decode_mt_init(AV1Decoder *pbi) {
AV1_COMMON *const cm = &pbi->common;
const AVxWorkerInterface *const winterface = aom_get_worker_interface();
int worker_idx;
// Create workers and thread_data
if (pbi->num_workers == 0) {
const int num_threads = pbi->max_threads;
CHECK_MEM_ERROR(cm, pbi->tile_workers,
aom_malloc(num_threads * sizeof(*pbi->tile_workers)));
CHECK_MEM_ERROR(cm, pbi->thread_data,
aom_calloc(num_threads, sizeof(*pbi->thread_data)));
for (worker_idx = 0; worker_idx < num_threads; ++worker_idx) {
AVxWorker *const worker = &pbi->tile_workers[worker_idx];
DecWorkerData *const thread_data = pbi->thread_data + worker_idx;
winterface->init(worker);
worker->thread_name = "aom tile worker";
if (worker_idx != 0 && !winterface->reset(worker)) {
aom_internal_error(&pbi->error, AOM_CODEC_ERROR,
"Tile decoder thread creation failed");
}
++pbi->num_workers;
if (worker_idx != 0) {
// Allocate thread data.
CHECK_MEM_ERROR(cm, thread_data->td,
aom_memalign(32, sizeof(*thread_data->td)));
av1_zero(*thread_data->td);
} else {
// Main thread acts as a worker and uses the thread data in pbi
thread_data->td = &pbi->td;
}
thread_data->error_info.error_code = AOM_CODEC_OK;
thread_data->error_info.setjmp = 0;
}
}
const int use_highbd = cm->seq_params->use_highbitdepth;
const int buf_size = MC_TEMP_BUF_PELS << use_highbd;
for (worker_idx = 1; worker_idx < pbi->max_threads; ++worker_idx) {
DecWorkerData *const thread_data = pbi->thread_data + worker_idx;
if (thread_data->td->mc_buf_size != buf_size) {
av1_free_mc_tmp_buf(thread_data->td);
allocate_mc_tmp_buf(cm, thread_data->td, buf_size, use_highbd);
}
}
}
static inline void tile_mt_queue(AV1Decoder *pbi, int tile_cols, int tile_rows,
int tile_rows_start, int tile_rows_end,
int tile_cols_start, int tile_cols_end,
int start_tile, int end_tile) {
AV1_COMMON *const cm = &pbi->common;
if (pbi->tile_mt_info.alloc_tile_cols != tile_cols ||
pbi->tile_mt_info.alloc_tile_rows != tile_rows) {
av1_dealloc_dec_jobs(&pbi->tile_mt_info);
alloc_dec_jobs(&pbi->tile_mt_info, cm, tile_rows, tile_cols);
}
enqueue_tile_jobs(pbi, cm, tile_rows_start, tile_rows_end, tile_cols_start,
tile_cols_end, start_tile, end_tile);
qsort(pbi->tile_mt_info.job_queue, pbi->tile_mt_info.jobs_enqueued,
sizeof(pbi->tile_mt_info.job_queue[0]), compare_tile_buffers);
}
static const uint8_t *decode_tiles_mt(AV1Decoder *pbi, const uint8_t *data,
const uint8_t *data_end, int start_tile,
int end_tile) {
AV1_COMMON *const cm = &pbi->common;
CommonTileParams *const tiles = &cm->tiles;
const int tile_cols = tiles->cols;
const int tile_rows = tiles->rows;
const int n_tiles = tile_cols * tile_rows;
TileBufferDec(*const tile_buffers)[MAX_TILE_COLS] = pbi->tile_buffers;
const int dec_tile_row = AOMMIN(pbi->dec_tile_row, tile_rows);
const int single_row = pbi->dec_tile_row >= 0;
const int dec_tile_col = AOMMIN(pbi->dec_tile_col, tile_cols);
const int single_col = pbi->dec_tile_col >= 0;
int tile_rows_start;
int tile_rows_end;
int tile_cols_start;
int tile_cols_end;
int tile_count_tg;
int num_workers;
const uint8_t *raw_data_end = NULL;
if (tiles->large_scale) {
tile_rows_start = single_row ? dec_tile_row : 0;
tile_rows_end = single_row ? dec_tile_row + 1 : tile_rows;
tile_cols_start = single_col ? dec_tile_col : 0;
tile_cols_end = single_col ? tile_cols_start + 1 : tile_cols;
} else {
tile_rows_start = 0;
tile_rows_end = tile_rows;
tile_cols_start = 0;
tile_cols_end = tile_cols;
}
tile_count_tg = end_tile - start_tile + 1;
num_workers = AOMMIN(pbi->max_threads, tile_count_tg);
// No tiles to decode.
if (tile_rows_end <= tile_rows_start || tile_cols_end <= tile_cols_start ||
// First tile is larger than end_tile.
tile_rows_start * tile_cols + tile_cols_start > end_tile ||
// Last tile is smaller than start_tile.
(tile_rows_end - 1) * tile_cols + tile_cols_end - 1 < start_tile)
return data;
assert(tile_rows <= MAX_TILE_ROWS);
assert(tile_cols <= MAX_TILE_COLS);
assert(tile_count_tg > 0);
assert(num_workers > 0);
assert(start_tile <= end_tile);
assert(start_tile >= 0 && end_tile < n_tiles);
decode_mt_init(pbi);
// get tile size in tile group
#if EXT_TILE_DEBUG
if (tiles->large_scale) assert(pbi->ext_tile_debug == 1);
if (tiles->large_scale)
raw_data_end = get_ls_tile_buffers(pbi, data, data_end, tile_buffers);
else
#endif // EXT_TILE_DEBUG
get_tile_buffers(pbi, data, data_end, tile_buffers, start_tile, end_tile);
if (pbi->tile_data == NULL || n_tiles != pbi->allocated_tiles) {
decoder_alloc_tile_data(pbi, n_tiles);
}
if (pbi->dcb.xd.seg_mask == NULL)
CHECK_MEM_ERROR(cm, pbi->dcb.xd.seg_mask,
(uint8_t *)aom_memalign(
16, 2 * MAX_SB_SQUARE * sizeof(*pbi->dcb.xd.seg_mask)));
for (int row = 0; row < tile_rows; row++) {
for (int col = 0; col < tile_cols; col++) {
TileDataDec *tile_data = pbi->tile_data + row * tiles->cols + col;
av1_tile_init(&tile_data->tile_info, cm, row, col);
}
}
tile_mt_queue(pbi, tile_cols, tile_rows, tile_rows_start, tile_rows_end,
tile_cols_start, tile_cols_end, start_tile, end_tile);
reset_dec_workers(pbi, tile_worker_hook, num_workers);
launch_dec_workers(pbi, data_end, num_workers);
sync_dec_workers(pbi, num_workers);
if (pbi->dcb.corrupted)
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Failed to decode tile data");
if (tiles->large_scale) {
if (n_tiles == 1) {
// Find the end of the single tile buffer
return aom_reader_find_end(&pbi->tile_data->bit_reader);
}
// Return the end of the last tile buffer
return raw_data_end;
}
TileDataDec *const tile_data = pbi->tile_data + end_tile;
return aom_reader_find_end(&tile_data->bit_reader);
}
static inline void dec_alloc_cb_buf(AV1Decoder *pbi) {
AV1_COMMON *const cm = &pbi->common;
int size = ((cm->mi_params.mi_rows >> cm->seq_params->mib_size_log2) + 1) *
((cm->mi_params.mi_cols >> cm->seq_params->mib_size_log2) + 1);
if (pbi->cb_buffer_alloc_size < size) {
av1_dec_free_cb_buf(pbi);
CHECK_MEM_ERROR(cm, pbi->cb_buffer_base,
aom_memalign(32, sizeof(*pbi->cb_buffer_base) * size));
memset(pbi->cb_buffer_base, 0, sizeof(*pbi->cb_buffer_base) * size);
pbi->cb_buffer_alloc_size = size;
}
}
static inline void row_mt_frame_init(AV1Decoder *pbi, int tile_rows_start,
int tile_rows_end, int tile_cols_start,
int tile_cols_end, int start_tile,
int end_tile, int max_sb_rows) {
AV1_COMMON *const cm = &pbi->common;
AV1DecRowMTInfo *frame_row_mt_info = &pbi->frame_row_mt_info;
frame_row_mt_info->tile_rows_start = tile_rows_start;
frame_row_mt_info->tile_rows_end = tile_rows_end;
frame_row_mt_info->tile_cols_start = tile_cols_start;
frame_row_mt_info->tile_cols_end = tile_cols_end;
frame_row_mt_info->start_tile = start_tile;
frame_row_mt_info->end_tile = end_tile;
frame_row_mt_info->mi_rows_to_decode = 0;
frame_row_mt_info->mi_rows_parse_done = 0;
frame_row_mt_info->mi_rows_decode_started = 0;
frame_row_mt_info->row_mt_exit = 0;
for (int tile_row = tile_rows_start; tile_row < tile_rows_end; ++tile_row) {
for (int tile_col = tile_cols_start; tile_col < tile_cols_end; ++tile_col) {
if (tile_row * cm->tiles.cols + tile_col < start_tile ||
tile_row * cm->tiles.cols + tile_col > end_tile)
continue;
TileDataDec *const tile_data =
pbi->tile_data + tile_row * cm->tiles.cols + tile_col;
const TileInfo *const tile_info = &tile_data->tile_info;
tile_data->dec_row_mt_sync.mi_rows_parse_done = 0;
tile_data->dec_row_mt_sync.mi_rows_decode_started = 0;
tile_data->dec_row_mt_sync.num_threads_working = 0;
tile_data->dec_row_mt_sync.mi_rows =
ALIGN_POWER_OF_TWO(tile_info->mi_row_end - tile_info->mi_row_start,
cm->seq_params->mib_size_log2);
tile_data->dec_row_mt_sync.mi_cols =
ALIGN_POWER_OF_TWO(tile_info->mi_col_end - tile_info->mi_col_start,
cm->seq_params->mib_size_log2);
tile_data->dec_row_mt_sync.intrabc_extra_top_right_sb_delay =
av1_get_intrabc_extra_top_right_sb_delay(cm);
frame_row_mt_info->mi_rows_to_decode +=
tile_data->dec_row_mt_sync.mi_rows;
// Initialize cur_sb_col to -1 for all SB rows.
memset(tile_data->dec_row_mt_sync.cur_sb_col, -1,
sizeof(*tile_data->dec_row_mt_sync.cur_sb_col) * max_sb_rows);
}
}
#if CONFIG_MULTITHREAD
if (pbi->row_mt_mutex_ == NULL) {
CHECK_MEM_ERROR(cm, pbi->row_mt_mutex_,
aom_malloc(sizeof(*(pbi->row_mt_mutex_))));
if (pbi->row_mt_mutex_) {
pthread_mutex_init(pbi->row_mt_mutex_, NULL);
}
}
if (pbi->row_mt_cond_ == NULL) {
CHECK_MEM_ERROR(cm, pbi->row_mt_cond_,
aom_malloc(sizeof(*(pbi->row_mt_cond_))));
if (pbi->row_mt_cond_) {
pthread_cond_init(pbi->row_mt_cond_, NULL);
}
}
#endif
}
static const uint8_t *decode_tiles_row_mt(AV1Decoder *pbi, const uint8_t *data,
const uint8_t *data_end,
int start_tile, int end_tile) {
AV1_COMMON *const cm = &pbi->common;
CommonTileParams *const tiles = &cm->tiles;
const int tile_cols = tiles->cols;
const int tile_rows = tiles->rows;
const int n_tiles = tile_cols * tile_rows;
TileBufferDec(*const tile_buffers)[MAX_TILE_COLS] = pbi->tile_buffers;
const int dec_tile_row = AOMMIN(pbi->dec_tile_row, tile_rows);
const int single_row = pbi->dec_tile_row >= 0;
const int dec_tile_col = AOMMIN(pbi->dec_tile_col, tile_cols);
const int single_col = pbi->dec_tile_col >= 0;
int tile_rows_start;
int tile_rows_end;
int tile_cols_start;
int tile_cols_end;
int tile_count_tg;
int num_workers = 0;
int max_threads;
const uint8_t *raw_data_end = NULL;
int max_sb_rows = 0;
if (tiles->large_scale) {
tile_rows_start = single_row ? dec_tile_row : 0;
tile_rows_end = single_row ? dec_tile_row + 1 : tile_rows;
tile_cols_start = single_col ? dec_tile_col : 0;
tile_cols_end = single_col ? tile_cols_start + 1 : tile_cols;
} else {
tile_rows_start = 0;
tile_rows_end = tile_rows;
tile_cols_start = 0;
tile_cols_end = tile_cols;
}
tile_count_tg = end_tile - start_tile + 1;
max_threads = pbi->max_threads;
// No tiles to decode.
if (tile_rows_end <= tile_rows_start || tile_cols_end <= tile_cols_start ||
// First tile is larger than end_tile.
tile_rows_start * tile_cols + tile_cols_start > end_tile ||
// Last tile is smaller than start_tile.
(tile_rows_end - 1) * tile_cols + tile_cols_end - 1 < start_tile)
return data;
assert(tile_rows <= MAX_TILE_ROWS);
assert(tile_cols <= MAX_TILE_COLS);
assert(tile_count_tg > 0);
assert(max_threads > 0);
assert(start_tile <= end_tile);
assert(start_tile >= 0 && end_tile < n_tiles);
(void)tile_count_tg;
decode_mt_init(pbi);
// get tile size in tile group
#if EXT_TILE_DEBUG
if (tiles->large_scale) assert(pbi->ext_tile_debug == 1);
if (tiles->large_scale)
raw_data_end = get_ls_tile_buffers(pbi, data, data_end, tile_buffers);
else
#endif // EXT_TILE_DEBUG
get_tile_buffers(pbi, data, data_end, tile_buffers, start_tile, end_tile);
if (pbi->tile_data == NULL || n_tiles != pbi->allocated_tiles) {
if (pbi->tile_data != NULL) {
for (int i = 0; i < pbi->allocated_tiles; i++) {
TileDataDec *const tile_data = pbi->tile_data + i;
av1_dec_row_mt_dealloc(&tile_data->dec_row_mt_sync);
}
}
decoder_alloc_tile_data(pbi, n_tiles);
}
if (pbi->dcb.xd.seg_mask == NULL)
CHECK_MEM_ERROR(cm, pbi->dcb.xd.seg_mask,
(uint8_t *)aom_memalign(
16, 2 * MAX_SB_SQUARE * sizeof(*pbi->dcb.xd.seg_mask)));
for (int row = 0; row < tile_rows; row++) {
for (int col = 0; col < tile_cols; col++) {
TileDataDec *tile_data = pbi->tile_data + row * tiles->cols + col;
av1_tile_init(&tile_data->tile_info, cm, row, col);
max_sb_rows = AOMMAX(max_sb_rows,
av1_get_sb_rows_in_tile(cm, &tile_data->tile_info));
num_workers += get_max_row_mt_workers_per_tile(cm, &tile_data->tile_info);
}
}
num_workers = AOMMIN(num_workers, max_threads);
if (pbi->allocated_row_mt_sync_rows != max_sb_rows) {
for (int i = 0; i < n_tiles; ++i) {
TileDataDec *const tile_data = pbi->tile_data + i;
av1_dec_row_mt_dealloc(&tile_data->dec_row_mt_sync);
dec_row_mt_alloc(&tile_data->dec_row_mt_sync, cm, max_sb_rows);
}
pbi->allocated_row_mt_sync_rows = max_sb_rows;
}
tile_mt_queue(pbi, tile_cols, tile_rows, tile_rows_start, tile_rows_end,
tile_cols_start, tile_cols_end, start_tile, end_tile);
dec_alloc_cb_buf(pbi);
row_mt_frame_init(pbi, tile_rows_start, tile_rows_end, tile_cols_start,
tile_cols_end, start_tile, end_tile, max_sb_rows);
reset_dec_workers(pbi, row_mt_worker_hook, num_workers);
launch_dec_workers(pbi, data_end, num_workers);
sync_dec_workers(pbi, num_workers);
if (pbi->dcb.corrupted)
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Failed to decode tile data");
if (tiles->large_scale) {
if (n_tiles == 1) {
// Find the end of the single tile buffer
return aom_reader_find_end(&pbi->tile_data->bit_reader);
}
// Return the end of the last tile buffer
return raw_data_end;
}
TileDataDec *const tile_data = pbi->tile_data + end_tile;
return aom_reader_find_end(&tile_data->bit_reader);
}
static inline void error_handler(void *data) {
AV1_COMMON *const cm = (AV1_COMMON *)data;
aom_internal_error(cm->error, AOM_CODEC_CORRUPT_FRAME, "Truncated packet");
}
// Reads the high_bitdepth and twelve_bit fields in color_config() and sets
// seq_params->bit_depth based on the values of those fields and
// seq_params->profile. Reports errors by calling rb->error_handler() or
// aom_internal_error().
static inline void read_bitdepth(struct aom_read_bit_buffer *rb,
SequenceHeader *seq_params,
struct aom_internal_error_info *error_info) {
const int high_bitdepth = aom_rb_read_bit(rb);
if (seq_params->profile == PROFILE_2 && high_bitdepth) {
const int twelve_bit = aom_rb_read_bit(rb);
seq_params->bit_depth = twelve_bit ? AOM_BITS_12 : AOM_BITS_10;
} else if (seq_params->profile <= PROFILE_2) {
seq_params->bit_depth = high_bitdepth ? AOM_BITS_10 : AOM_BITS_8;
} else {
aom_internal_error(error_info, AOM_CODEC_UNSUP_BITSTREAM,
"Unsupported profile/bit-depth combination");
}
#if !CONFIG_AV1_HIGHBITDEPTH
if (seq_params->bit_depth > AOM_BITS_8) {
aom_internal_error(error_info, AOM_CODEC_UNSUP_BITSTREAM,
"Bit-depth %d not supported", seq_params->bit_depth);
}
#endif
}
static void read_film_grain_params(AV1_COMMON *cm,
struct aom_read_bit_buffer *rb) {
aom_film_grain_t *pars = &cm->film_grain_params;
const SequenceHeader *const seq_params = cm->seq_params;
pars->apply_grain = aom_rb_read_bit(rb);
if (!pars->apply_grain) {
memset(pars, 0, sizeof(*pars));
return;
}
pars->random_seed = aom_rb_read_literal(rb, 16);
if (cm->current_frame.frame_type == INTER_FRAME)
pars->update_parameters = aom_rb_read_bit(rb);
else
pars->update_parameters = 1;
pars->bit_depth = seq_params->bit_depth;
if (!pars->update_parameters) {
// inherit parameters from a previous reference frame
int film_grain_params_ref_idx = aom_rb_read_literal(rb, 3);
// Section 6.8.20: It is a requirement of bitstream conformance that
// film_grain_params_ref_idx is equal to ref_frame_idx[ j ] for some value
// of j in the range 0 to REFS_PER_FRAME - 1.
int found = 0;
for (int i = 0; i < INTER_REFS_PER_FRAME; ++i) {
if (film_grain_params_ref_idx == cm->remapped_ref_idx[i]) {
found = 1;
break;
}
}
if (!found) {
aom_internal_error(cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"Invalid film grain reference idx %d. ref_frame_idx = "
"{%d, %d, %d, %d, %d, %d, %d}",
film_grain_params_ref_idx, cm->remapped_ref_idx[0],
cm->remapped_ref_idx[1], cm->remapped_ref_idx[2],
cm->remapped_ref_idx[3], cm->remapped_ref_idx[4],
cm->remapped_ref_idx[5], cm->remapped_ref_idx[6]);
}
RefCntBuffer *const buf = cm->ref_frame_map[film_grain_params_ref_idx];
if (buf == NULL) {
aom_internal_error(cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"Invalid Film grain reference idx");
}
if (!buf->film_grain_params_present) {
aom_internal_error(cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"Film grain reference parameters not available");
}
uint16_t random_seed = pars->random_seed;
*pars = buf->film_grain_params; // inherit paramaters
pars->random_seed = random_seed; // with new random seed
return;
}
// Scaling functions parameters
pars->num_y_points = aom_rb_read_literal(rb, 4); // max 14
if (pars->num_y_points > 14)
aom_internal_error(cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"Number of points for film grain luma scaling function "
"exceeds the maximum value.");
for (int i = 0; i < pars->num_y_points; i++) {
pars->scaling_points_y[i][0] = aom_rb_read_literal(rb, 8);
if (i && pars->scaling_points_y[i - 1][0] >= pars->scaling_points_y[i][0])
aom_internal_error(cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"First coordinate of the scaling function points "
"shall be increasing.");
pars->scaling_points_y[i][1] = aom_rb_read_literal(rb, 8);
}
if (!seq_params->monochrome)
pars->chroma_scaling_from_luma = aom_rb_read_bit(rb);
else
pars->chroma_scaling_from_luma = 0;
if (seq_params->monochrome || pars->chroma_scaling_from_luma ||
((seq_params->subsampling_x == 1) && (seq_params->subsampling_y == 1) &&
(pars->num_y_points == 0))) {
pars->num_cb_points = 0;
pars->num_cr_points = 0;
} else {
pars->num_cb_points = aom_rb_read_literal(rb, 4); // max 10
if (pars->num_cb_points > 10)
aom_internal_error(cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"Number of points for film grain cb scaling function "
"exceeds the maximum value.");
for (int i = 0; i < pars->num_cb_points; i++) {
pars->scaling_points_cb[i][0] = aom_rb_read_literal(rb, 8);
if (i &&
pars->scaling_points_cb[i - 1][0] >= pars->scaling_points_cb[i][0])
aom_internal_error(cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"First coordinate of the scaling function points "
"shall be increasing.");
pars->scaling_points_cb[i][1] = aom_rb_read_literal(rb, 8);
}
pars->num_cr_points = aom_rb_read_literal(rb, 4); // max 10
if (pars->num_cr_points > 10)
aom_internal_error(cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"Number of points for film grain cr scaling function "
"exceeds the maximum value.");
for (int i = 0; i < pars->num_cr_points; i++) {
pars->scaling_points_cr[i][0] = aom_rb_read_literal(rb, 8);
if (i &&
pars->scaling_points_cr[i - 1][0] >= pars->scaling_points_cr[i][0])
aom_internal_error(cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"First coordinate of the scaling function points "
"shall be increasing.");
pars->scaling_points_cr[i][1] = aom_rb_read_literal(rb, 8);
}
if ((seq_params->subsampling_x == 1) && (seq_params->subsampling_y == 1) &&
(((pars->num_cb_points == 0) && (pars->num_cr_points != 0)) ||
((pars->num_cb_points != 0) && (pars->num_cr_points == 0))))
aom_internal_error(cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"In YCbCr 4:2:0, film grain shall be applied "
"to both chroma components or neither.");
}
pars->scaling_shift = aom_rb_read_literal(rb, 2) + 8; // 8 + value
// AR coefficients
// Only sent if the corresponsing scaling function has
// more than 0 points
pars->ar_coeff_lag = aom_rb_read_literal(rb, 2);
int num_pos_luma = 2 * pars->ar_coeff_lag * (pars->ar_coeff_lag + 1);
int num_pos_chroma = num_pos_luma;
if (pars->num_y_points > 0) ++num_pos_chroma;
if (pars->num_y_points)
for (int i = 0; i < num_pos_luma; i++)
pars->ar_coeffs_y[i] = aom_rb_read_literal(rb, 8) - 128;
if (pars->num_cb_points || pars->chroma_scaling_from_luma)
for (int i = 0; i < num_pos_chroma; i++)
pars->ar_coeffs_cb[i] = aom_rb_read_literal(rb, 8) - 128;
if (pars->num_cr_points || pars->chroma_scaling_from_luma)
for (int i = 0; i < num_pos_chroma; i++)
pars->ar_coeffs_cr[i] = aom_rb_read_literal(rb, 8) - 128;
pars->ar_coeff_shift = aom_rb_read_literal(rb, 2) + 6; // 6 + value
pars->grain_scale_shift = aom_rb_read_literal(rb, 2);
if (pars->num_cb_points) {
pars->cb_mult = aom_rb_read_literal(rb, 8);
pars->cb_luma_mult = aom_rb_read_literal(rb, 8);
pars->cb_offset = aom_rb_read_literal(rb, 9);
}
if (pars->num_cr_points) {
pars->cr_mult = aom_rb_read_literal(rb, 8);
pars->cr_luma_mult = aom_rb_read_literal(rb, 8);
pars->cr_offset = aom_rb_read_literal(rb, 9);
}
pars->overlap_flag = aom_rb_read_bit(rb);
pars->clip_to_restricted_range = aom_rb_read_bit(rb);
}
static inline void read_film_grain(AV1_COMMON *cm,
struct aom_read_bit_buffer *rb) {
if (cm->seq_params->film_grain_params_present &&
(cm->show_frame || cm->showable_frame)) {
read_film_grain_params(cm, rb);
} else {
memset(&cm->film_grain_params, 0, sizeof(cm->film_grain_params));
}
cm->film_grain_params.bit_depth = cm->seq_params->bit_depth;
memcpy(&cm->cur_frame->film_grain_params, &cm->film_grain_params,
sizeof(aom_film_grain_t));
}
void av1_read_color_config(struct aom_read_bit_buffer *rb,
int allow_lowbitdepth, SequenceHeader *seq_params,
struct aom_internal_error_info *error_info) {
read_bitdepth(rb, seq_params, error_info);
seq_params->use_highbitdepth =
seq_params->bit_depth > AOM_BITS_8 || !allow_lowbitdepth;
// monochrome bit (not needed for PROFILE_1)
const int is_monochrome =
seq_params->profile != PROFILE_1 ? aom_rb_read_bit(rb) : 0;
seq_params->monochrome = is_monochrome;
int color_description_present_flag = aom_rb_read_bit(rb);
if (color_description_present_flag) {
seq_params->color_primaries = aom_rb_read_literal(rb, 8);
seq_params->transfer_characteristics = aom_rb_read_literal(rb, 8);
seq_params->matrix_coefficients = aom_rb_read_literal(rb, 8);
} else {
seq_params->color_primaries = AOM_CICP_CP_UNSPECIFIED;
seq_params->transfer_characteristics = AOM_CICP_TC_UNSPECIFIED;
seq_params->matrix_coefficients = AOM_CICP_MC_UNSPECIFIED;
}
if (is_monochrome) {
// [16,235] (including xvycc) vs [0,255] range
seq_params->color_range = aom_rb_read_bit(rb);
seq_params->subsampling_y = seq_params->subsampling_x = 1;
seq_params->chroma_sample_position = AOM_CSP_UNKNOWN;
seq_params->separate_uv_delta_q = 0;
return;
}
if (seq_params->color_primaries == AOM_CICP_CP_BT_709 &&
seq_params->transfer_characteristics == AOM_CICP_TC_SRGB &&
seq_params->matrix_coefficients == AOM_CICP_MC_IDENTITY) {
seq_params->subsampling_y = seq_params->subsampling_x = 0;
seq_params->color_range = 1; // assume full color-range
if (!(seq_params->profile == PROFILE_1 ||
(seq_params->profile == PROFILE_2 &&
seq_params->bit_depth == AOM_BITS_12))) {
aom_internal_error(
error_info, AOM_CODEC_UNSUP_BITSTREAM,
"sRGB colorspace not compatible with specified profile");
}
} else {
// [16,235] (including xvycc) vs [0,255] range
seq_params->color_range = aom_rb_read_bit(rb);
if (seq_params->profile == PROFILE_0) {
// 420 only
seq_params->subsampling_x = seq_params->subsampling_y = 1;
} else if (seq_params->profile == PROFILE_1) {
// 444 only
seq_params->subsampling_x = seq_params->subsampling_y = 0;
} else {
assert(seq_params->profile == PROFILE_2);
if (seq_params->bit_depth == AOM_BITS_12) {
seq_params->subsampling_x = aom_rb_read_bit(rb);
if (seq_params->subsampling_x)
seq_params->subsampling_y = aom_rb_read_bit(rb); // 422 or 420
else
seq_params->subsampling_y = 0; // 444
} else {
// 422
seq_params->subsampling_x = 1;
seq_params->subsampling_y = 0;
}
}
if (seq_params->matrix_coefficients == AOM_CICP_MC_IDENTITY &&
(seq_params->subsampling_x || seq_params->subsampling_y)) {
aom_internal_error(
error_info, AOM_CODEC_UNSUP_BITSTREAM,
"Identity CICP Matrix incompatible with non 4:4:4 color sampling");
}
if (seq_params->subsampling_x && seq_params->subsampling_y) {
seq_params->chroma_sample_position = aom_rb_read_literal(rb, 2);
}
}
seq_params->separate_uv_delta_q = aom_rb_read_bit(rb);
}
void av1_read_timing_info_header(aom_timing_info_t *timing_info,
struct aom_internal_error_info *error,
struct aom_read_bit_buffer *rb) {
timing_info->num_units_in_display_tick =
aom_rb_read_unsigned_literal(rb,
32); // Number of units in a display tick
timing_info->time_scale = aom_rb_read_unsigned_literal(rb, 32); // Time scale
if (timing_info->num_units_in_display_tick == 0 ||
timing_info->time_scale == 0) {
aom_internal_error(
error, AOM_CODEC_UNSUP_BITSTREAM,
"num_units_in_display_tick and time_scale must be greater than 0.");
}
timing_info->equal_picture_interval =
aom_rb_read_bit(rb); // Equal picture interval bit
if (timing_info->equal_picture_interval) {
const uint32_t num_ticks_per_picture_minus_1 = aom_rb_read_uvlc(rb);
if (num_ticks_per_picture_minus_1 == UINT32_MAX) {
aom_internal_error(
error, AOM_CODEC_UNSUP_BITSTREAM,
"num_ticks_per_picture_minus_1 cannot be (1 << 32) - 1.");
}
timing_info->num_ticks_per_picture = num_ticks_per_picture_minus_1 + 1;
}
}
void av1_read_decoder_model_info(aom_dec_model_info_t *decoder_model_info,
struct aom_read_bit_buffer *rb) {
decoder_model_info->encoder_decoder_buffer_delay_length =
aom_rb_read_literal(rb, 5) + 1;
decoder_model_info->num_units_in_decoding_tick =
aom_rb_read_unsigned_literal(rb,
32); // Number of units in a decoding tick
decoder_model_info->buffer_removal_time_length =
aom_rb_read_literal(rb, 5) + 1;
decoder_model_info->frame_presentation_time_length =
aom_rb_read_literal(rb, 5) + 1;
}
void av1_read_op_parameters_info(aom_dec_model_op_parameters_t *op_params,
int buffer_delay_length,
struct aom_read_bit_buffer *rb) {
op_params->decoder_buffer_delay =
aom_rb_read_unsigned_literal(rb, buffer_delay_length);
op_params->encoder_buffer_delay =
aom_rb_read_unsigned_literal(rb, buffer_delay_length);
op_params->low_delay_mode_flag = aom_rb_read_bit(rb);
}
static inline void read_temporal_point_info(AV1_COMMON *const cm,
struct aom_read_bit_buffer *rb) {
cm->frame_presentation_time = aom_rb_read_unsigned_literal(
rb, cm->seq_params->decoder_model_info.frame_presentation_time_length);
}
void av1_read_sequence_header(AV1_COMMON *cm, struct aom_read_bit_buffer *rb,
SequenceHeader *seq_params) {
const int num_bits_width = aom_rb_read_literal(rb, 4) + 1;
const int num_bits_height = aom_rb_read_literal(rb, 4) + 1;
const int max_frame_width = aom_rb_read_literal(rb, num_bits_width) + 1;
const int max_frame_height = aom_rb_read_literal(rb, num_bits_height) + 1;
seq_params->num_bits_width = num_bits_width;
seq_params->num_bits_height = num_bits_height;
seq_params->max_frame_width = max_frame_width;
seq_params->max_frame_height = max_frame_height;
if (seq_params->reduced_still_picture_hdr) {
seq_params->frame_id_numbers_present_flag = 0;
} else {
seq_params->frame_id_numbers_present_flag = aom_rb_read_bit(rb);
}
if (seq_params->frame_id_numbers_present_flag) {
// We must always have delta_frame_id_length < frame_id_length,
// in order for a frame to be referenced with a unique delta.
// Avoid wasting bits by using a coding that enforces this restriction.
seq_params->delta_frame_id_length = aom_rb_read_literal(rb, 4) + 2;
seq_params->frame_id_length =
aom_rb_read_literal(rb, 3) + seq_params->delta_frame_id_length + 1;
if (seq_params->frame_id_length > 16)
aom_internal_error(cm->error, AOM_CODEC_CORRUPT_FRAME,
"Invalid frame_id_length");
}
setup_sb_size(seq_params, rb);
seq_params->enable_filter_intra = aom_rb_read_bit(rb);
seq_params->enable_intra_edge_filter = aom_rb_read_bit(rb);
if (seq_params->reduced_still_picture_hdr) {
seq_params->enable_interintra_compound = 0;
seq_params->enable_masked_compound = 0;
seq_params->enable_warped_motion = 0;
seq_params->enable_dual_filter = 0;
seq_params->order_hint_info.enable_order_hint = 0;
seq_params->order_hint_info.enable_dist_wtd_comp = 0;
seq_params->order_hint_info.enable_ref_frame_mvs = 0;
seq_params->force_screen_content_tools = 2; // SELECT_SCREEN_CONTENT_TOOLS
seq_params->force_integer_mv = 2; // SELECT_INTEGER_MV
seq_params->order_hint_info.order_hint_bits_minus_1 = -1;
} else {
seq_params->enable_interintra_compound = aom_rb_read_bit(rb);
seq_params->enable_masked_compound = aom_rb_read_bit(rb);
seq_params->enable_warped_motion = aom_rb_read_bit(rb);
seq_params->enable_dual_filter = aom_rb_read_bit(rb);
seq_params->order_hint_info.enable_order_hint = aom_rb_read_bit(rb);
seq_params->order_hint_info.enable_dist_wtd_comp =
seq_params->order_hint_info.enable_order_hint ? aom_rb_read_bit(rb) : 0;
seq_params->order_hint_info.enable_ref_frame_mvs =
seq_params->order_hint_info.enable_order_hint ? aom_rb_read_bit(rb) : 0;
if (aom_rb_read_bit(rb)) {
seq_params->force_screen_content_tools =
2; // SELECT_SCREEN_CONTENT_TOOLS
} else {
seq_params->force_screen_content_tools = aom_rb_read_bit(rb);
}
if (seq_params->force_screen_content_tools > 0) {
if (aom_rb_read_bit(rb)) {
seq_params->force_integer_mv = 2; // SELECT_INTEGER_MV
} else {
seq_params->force_integer_mv = aom_rb_read_bit(rb);
}
} else {
seq_params->force_integer_mv = 2; // SELECT_INTEGER_MV
}
seq_params->order_hint_info.order_hint_bits_minus_1 =
seq_params->order_hint_info.enable_order_hint
? aom_rb_read_literal(rb, 3)
: -1;
}
seq_params->enable_superres = aom_rb_read_bit(rb);
seq_params->enable_cdef = aom_rb_read_bit(rb);
seq_params->enable_restoration = aom_rb_read_bit(rb);
}
static int read_global_motion_params(WarpedMotionParams *params,
const WarpedMotionParams *ref_params,
struct aom_read_bit_buffer *rb,
int allow_hp) {
TransformationType type = aom_rb_read_bit(rb);
if (type != IDENTITY) {
if (aom_rb_read_bit(rb))
type = ROTZOOM;
else
type = aom_rb_read_bit(rb) ? TRANSLATION : AFFINE;
}
*params = default_warp_params;
params->wmtype = type;
if (type >= ROTZOOM) {
params->wmmat[2] = aom_rb_read_signed_primitive_refsubexpfin(
rb, GM_ALPHA_MAX + 1, SUBEXPFIN_K,
(ref_params->wmmat[2] >> GM_ALPHA_PREC_DIFF) -
(1 << GM_ALPHA_PREC_BITS)) *
GM_ALPHA_DECODE_FACTOR +
(1 << WARPEDMODEL_PREC_BITS);
params->wmmat[3] = aom_rb_read_signed_primitive_refsubexpfin(
rb, GM_ALPHA_MAX + 1, SUBEXPFIN_K,
(ref_params->wmmat[3] >> GM_ALPHA_PREC_DIFF)) *
GM_ALPHA_DECODE_FACTOR;
}
if (type >= AFFINE) {
params->wmmat[4] = aom_rb_read_signed_primitive_refsubexpfin(
rb, GM_ALPHA_MAX + 1, SUBEXPFIN_K,
(ref_params->wmmat[4] >> GM_ALPHA_PREC_DIFF)) *
GM_ALPHA_DECODE_FACTOR;
params->wmmat[5] = aom_rb_read_signed_primitive_refsubexpfin(
rb, GM_ALPHA_MAX + 1, SUBEXPFIN_K,
(ref_params->wmmat[5] >> GM_ALPHA_PREC_DIFF) -
(1 << GM_ALPHA_PREC_BITS)) *
GM_ALPHA_DECODE_FACTOR +
(1 << WARPEDMODEL_PREC_BITS);
} else {
params->wmmat[4] = -params->wmmat[3];
params->wmmat[5] = params->wmmat[2];
}
if (type >= TRANSLATION) {
const int trans_bits = (type == TRANSLATION)
? GM_ABS_TRANS_ONLY_BITS - !allow_hp
: GM_ABS_TRANS_BITS;
const int trans_dec_factor =
(type == TRANSLATION) ? GM_TRANS_ONLY_DECODE_FACTOR * (1 << !allow_hp)
: GM_TRANS_DECODE_FACTOR;
const int trans_prec_diff = (type == TRANSLATION)
? GM_TRANS_ONLY_PREC_DIFF + !allow_hp
: GM_TRANS_PREC_DIFF;
params->wmmat[0] = aom_rb_read_signed_primitive_refsubexpfin(
rb, (1 << trans_bits) + 1, SUBEXPFIN_K,
(ref_params->wmmat[0] >> trans_prec_diff)) *
trans_dec_factor;
params->wmmat[1] = aom_rb_read_signed_primitive_refsubexpfin(
rb, (1 << trans_bits) + 1, SUBEXPFIN_K,
(ref_params->wmmat[1] >> trans_prec_diff)) *
trans_dec_factor;
}
int good_shear_params = av1_get_shear_params(params);
if (!good_shear_params) return 0;
return 1;
}
static inline void read_global_motion(AV1_COMMON *cm,
struct aom_read_bit_buffer *rb) {
for (int frame = LAST_FRAME; frame <= ALTREF_FRAME; ++frame) {
const WarpedMotionParams *ref_params =
cm->prev_frame ? &cm->prev_frame->global_motion[frame]
: &default_warp_params;
int good_params =
read_global_motion_params(&cm->global_motion[frame], ref_params, rb,
cm->features.allow_high_precision_mv);
if (!good_params) {
#if WARPED_MOTION_DEBUG
printf("Warning: unexpected global motion shear params from aomenc\n");
#endif
cm->global_motion[frame].invalid = 1;
}
// TODO(sarahparker, debargha): The logic in the commented out code below
// does not work currently and causes mismatches when resize is on. Fix it
// before turning the optimization back on.
/*
YV12_BUFFER_CONFIG *ref_buf = get_ref_frame(cm, frame);
if (cm->width == ref_buf->y_crop_width &&
cm->height == ref_buf->y_crop_height) {
read_global_motion_params(&cm->global_motion[frame],
&cm->prev_frame->global_motion[frame], rb,
cm->features.allow_high_precision_mv);
} else {
cm->global_motion[frame] = default_warp_params;
}
*/
/*
printf("Dec Ref %d [%d/%d]: %d %d %d %d\n",
frame, cm->current_frame.frame_number, cm->show_frame,
cm->global_motion[frame].wmmat[0],
cm->global_motion[frame].wmmat[1],
cm->global_motion[frame].wmmat[2],
cm->global_motion[frame].wmmat[3]);
*/
}
memcpy(cm->cur_frame->global_motion, cm->global_motion,
REF_FRAMES * sizeof(WarpedMotionParams));
}
// Release the references to the frame buffers in cm->ref_frame_map and reset
// all elements of cm->ref_frame_map to NULL.
static inline void reset_ref_frame_map(AV1_COMMON *const cm) {
BufferPool *const pool = cm->buffer_pool;
for (int i = 0; i < REF_FRAMES; i++) {
decrease_ref_count(cm->ref_frame_map[i], pool);
cm->ref_frame_map[i] = NULL;
}
}
// If the refresh_frame_flags bitmask is set, update reference frame id values
// and mark frames as valid for reference.
static inline void update_ref_frame_id(AV1Decoder *const pbi) {
AV1_COMMON *const cm = &pbi->common;
int refresh_frame_flags = cm->current_frame.refresh_frame_flags;
for (int i = 0; i < REF_FRAMES; i++) {
if ((refresh_frame_flags >> i) & 1) {
cm->ref_frame_id[i] = cm->current_frame_id;
pbi->valid_for_referencing[i] = 1;
}
}
}
static inline void show_existing_frame_reset(AV1Decoder *const pbi,
int existing_frame_idx) {
AV1_COMMON *const cm = &pbi->common;
assert(cm->show_existing_frame);
cm->current_frame.frame_type = KEY_FRAME;
cm->current_frame.refresh_frame_flags = (1 << REF_FRAMES) - 1;
for (int i = 0; i < INTER_REFS_PER_FRAME; ++i) {
cm->remapped_ref_idx[i] = INVALID_IDX;
}
if (pbi->need_resync) {
reset_ref_frame_map(cm);
pbi->need_resync = 0;
}
// Note that the displayed frame must be valid for referencing in order to
// have been selected.
cm->current_frame_id = cm->ref_frame_id[existing_frame_idx];
update_ref_frame_id(pbi);
cm->features.refresh_frame_context = REFRESH_FRAME_CONTEXT_DISABLED;
}
static inline void reset_frame_buffers(AV1_COMMON *cm) {
RefCntBuffer *const frame_bufs = cm->buffer_pool->frame_bufs;
int i;
lock_buffer_pool(cm->buffer_pool);
reset_ref_frame_map(cm);
assert(cm->cur_frame->ref_count == 1);
for (i = 0; i < cm->buffer_pool->num_frame_bufs; ++i) {
// Reset all unreferenced frame buffers. We can also reset cm->cur_frame
// because we are the sole owner of cm->cur_frame.
if (frame_bufs[i].ref_count > 0 && &frame_bufs[i] != cm->cur_frame) {
continue;
}
frame_bufs[i].order_hint = 0;
av1_zero(frame_bufs[i].ref_order_hints);
}
av1_zero_unused_internal_frame_buffers(&cm->buffer_pool->int_frame_buffers);
unlock_buffer_pool(cm->buffer_pool);
}
// On success, returns 0. On failure, calls aom_internal_error and does not
// return.
static int read_uncompressed_header(AV1Decoder *pbi,
struct aom_read_bit_buffer *rb) {
AV1_COMMON *const cm = &pbi->common;
const SequenceHeader *const seq_params = cm->seq_params;
CurrentFrame *const current_frame = &cm->current_frame;
FeatureFlags *const features = &cm->features;
MACROBLOCKD *const xd = &pbi->dcb.xd;
BufferPool *const pool = cm->buffer_pool;
RefCntBuffer *const frame_bufs = pool->frame_bufs;
aom_s_frame_info *sframe_info = &pbi->sframe_info;
sframe_info->is_s_frame = 0;
sframe_info->is_s_frame_at_altref = 0;
if (!pbi->sequence_header_ready) {
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"No sequence header");
}
if (seq_params->reduced_still_picture_hdr) {
cm->show_existing_frame = 0;
cm->show_frame = 1;
current_frame->frame_type = KEY_FRAME;
if (pbi->sequence_header_changed) {
// This is the start of a new coded video sequence.
pbi->sequence_header_changed = 0;
pbi->decoding_first_frame = 1;
reset_frame_buffers(cm);
}
features->error_resilient_mode = 1;
} else {
cm->show_existing_frame = aom_rb_read_bit(rb);
pbi->reset_decoder_state = 0;
if (cm->show_existing_frame) {
if (pbi->sequence_header_changed) {
aom_internal_error(
&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"New sequence header starts with a show_existing_frame.");
}
// Show an existing frame directly.
const int existing_frame_idx = aom_rb_read_literal(rb, 3);
RefCntBuffer *const frame_to_show = cm->ref_frame_map[existing_frame_idx];
if (frame_to_show == NULL) {
aom_internal_error(&pbi->error, AOM_CODEC_UNSUP_BITSTREAM,
"Buffer does not contain a decoded frame");
}
if (seq_params->decoder_model_info_present_flag &&
seq_params->timing_info.equal_picture_interval == 0) {
read_temporal_point_info(cm, rb);
}
if (seq_params->frame_id_numbers_present_flag) {
int frame_id_length = seq_params->frame_id_length;
int display_frame_id = aom_rb_read_literal(rb, frame_id_length);
/* Compare display_frame_id with ref_frame_id and check valid for
* referencing */
if (display_frame_id != cm->ref_frame_id[existing_frame_idx] ||
pbi->valid_for_referencing[existing_frame_idx] == 0)
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Reference buffer frame ID mismatch");
}
lock_buffer_pool(pool);
assert(frame_to_show->ref_count > 0);
// cm->cur_frame should be the buffer referenced by the return value
// of the get_free_fb() call in assign_cur_frame_new_fb() (called by
// av1_receive_compressed_data()), so the ref_count should be 1.
assert(cm->cur_frame->ref_count == 1);
// assign_frame_buffer_p() decrements ref_count directly rather than
// call decrease_ref_count(). If cm->cur_frame->raw_frame_buffer has
// already been allocated, it will not be released by
// assign_frame_buffer_p()!
assert(!cm->cur_frame->raw_frame_buffer.data);
assign_frame_buffer_p(&cm->cur_frame, frame_to_show);
pbi->reset_decoder_state = frame_to_show->frame_type == KEY_FRAME;
unlock_buffer_pool(pool);
cm->lf.filter_level[0] = 0;
cm->lf.filter_level[1] = 0;
cm->show_frame = 1;
current_frame->order_hint = frame_to_show->order_hint;
// Section 6.8.2: It is a requirement of bitstream conformance that when
// show_existing_frame is used to show a previous frame, that the value
// of showable_frame for the previous frame was equal to 1.
if (!frame_to_show->showable_frame) {
aom_internal_error(&pbi->error, AOM_CODEC_UNSUP_BITSTREAM,
"Buffer does not contain a showable frame");
}
// Section 6.8.2: It is a requirement of bitstream conformance that when
// show_existing_frame is used to show a previous frame with
// RefFrameType[ frame_to_show_map_idx ] equal to KEY_FRAME, that the
// frame is output via the show_existing_frame mechanism at most once.
if (pbi->reset_decoder_state) frame_to_show->showable_frame = 0;
cm->film_grain_params = frame_to_show->film_grain_params;
if (pbi->reset_decoder_state) {
show_existing_frame_reset(pbi, existing_frame_idx);
} else {
current_frame->refresh_frame_flags = 0;
}
return 0;
}
current_frame->frame_type = (FRAME_TYPE)aom_rb_read_literal(rb, 2);
if (pbi->sequence_header_changed) {
if (current_frame->frame_type == KEY_FRAME) {
// This is the start of a new coded video sequence.
pbi->sequence_header_changed = 0;
pbi->decoding_first_frame = 1;
reset_frame_buffers(cm);
} else {
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Sequence header has changed without a keyframe.");
}
}
cm->show_frame = aom_rb_read_bit(rb);
if (cm->show_frame == 0) pbi->is_arf_frame_present = 1;
if (cm->show_frame == 0 && cm->current_frame.frame_type == KEY_FRAME)
pbi->is_fwd_kf_present = 1;
if (cm->current_frame.frame_type == S_FRAME) {
sframe_info->is_s_frame = 1;
sframe_info->is_s_frame_at_altref = cm->show_frame ? 0 : 1;
}
if (seq_params->still_picture &&
(current_frame->frame_type != KEY_FRAME || !cm->show_frame)) {
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Still pictures must be coded as shown keyframes");
}
cm->showable_frame = current_frame->frame_type != KEY_FRAME;
if (cm->show_frame) {
if (seq_params->decoder_model_info_present_flag &&
seq_params->timing_info.equal_picture_interval == 0)
read_temporal_point_info(cm, rb);
} else {
// See if this frame can be used as show_existing_frame in future
cm->showable_frame = aom_rb_read_bit(rb);
}
cm->cur_frame->showable_frame = cm->showable_frame;
features->error_resilient_mode =
frame_is_sframe(cm) ||
(current_frame->frame_type == KEY_FRAME && cm->show_frame)
? 1
: aom_rb_read_bit(rb);
}
if (current_frame->frame_type == KEY_FRAME && cm->show_frame) {
/* All frames need to be marked as not valid for referencing */
for (int i = 0; i < REF_FRAMES; i++) {
pbi->valid_for_referencing[i] = 0;
}
}
features->disable_cdf_update = aom_rb_read_bit(rb);
if (seq_params->force_screen_content_tools == 2) {
features->allow_screen_content_tools = aom_rb_read_bit(rb);
} else {
features->allow_screen_content_tools =
seq_params->force_screen_content_tools;
}
if (features->allow_screen_content_tools) {
if (seq_params->force_integer_mv == 2) {
features->cur_frame_force_integer_mv = aom_rb_read_bit(rb);
} else {
features->cur_frame_force_integer_mv = seq_params->force_integer_mv;
}
} else {
features->cur_frame_force_integer_mv = 0;
}
int frame_size_override_flag = 0;
features->allow_intrabc = 0;
features->primary_ref_frame = PRIMARY_REF_NONE;
if (!seq_params->reduced_still_picture_hdr) {
if (seq_params->frame_id_numbers_present_flag) {
int frame_id_length = seq_params->frame_id_length;
int diff_len = seq_params->delta_frame_id_length;
int prev_frame_id = 0;
int have_prev_frame_id =
!pbi->decoding_first_frame &&
!(current_frame->frame_type == KEY_FRAME && cm->show_frame);
if (have_prev_frame_id) {
prev_frame_id = cm->current_frame_id;
}
cm->current_frame_id = aom_rb_read_literal(rb, frame_id_length);
if (have_prev_frame_id) {
int diff_frame_id;
if (cm->current_frame_id > prev_frame_id) {
diff_frame_id = cm->current_frame_id - prev_frame_id;
} else {
diff_frame_id =
(1 << frame_id_length) + cm->current_frame_id - prev_frame_id;
}
/* Check current_frame_id for conformance */
if (prev_frame_id == cm->current_frame_id ||
diff_frame_id >= (1 << (frame_id_length - 1))) {
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Invalid value of current_frame_id");
}
}
/* Check if some frames need to be marked as not valid for referencing */
for (int i = 0; i < REF_FRAMES; i++) {
if (cm->current_frame_id - (1 << diff_len) > 0) {
if (cm->ref_frame_id[i] > cm->current_frame_id ||
cm->ref_frame_id[i] < cm->current_frame_id - (1 << diff_len))
pbi->valid_for_referencing[i] = 0;
} else {
if (cm->ref_frame_id[i] > cm->current_frame_id &&
cm->ref_frame_id[i] < (1 << frame_id_length) +
cm->current_frame_id - (1 << diff_len))
pbi->valid_for_referencing[i] = 0;
}
}
}
frame_size_override_flag = frame_is_sframe(cm) ? 1 : aom_rb_read_bit(rb);
current_frame->order_hint = aom_rb_read_literal(
rb, seq_params->order_hint_info.order_hint_bits_minus_1 + 1);
if (seq_params->order_hint_info.enable_order_hint)
current_frame->frame_number = current_frame->order_hint;
if (!features->error_resilient_mode && !frame_is_intra_only(cm)) {
features->primary_ref_frame = aom_rb_read_literal(rb, PRIMARY_REF_BITS);
}
}
if (seq_params->decoder_model_info_present_flag) {
pbi->buffer_removal_time_present = aom_rb_read_bit(rb);
if (pbi->buffer_removal_time_present) {
for (int op_num = 0;
op_num < seq_params->operating_points_cnt_minus_1 + 1; op_num++) {
if (seq_params->op_params[op_num].decoder_model_param_present_flag) {
if (seq_params->operating_point_idc[op_num] == 0 ||
(((seq_params->operating_point_idc[op_num] >>
cm->temporal_layer_id) &
0x1) &&
((seq_params->operating_point_idc[op_num] >>
(cm->spatial_layer_id + 8)) &
0x1))) {
cm->buffer_removal_times[op_num] = aom_rb_read_unsigned_literal(
rb, seq_params->decoder_model_info.buffer_removal_time_length);
} else {
cm->buffer_removal_times[op_num] = 0;
}
} else {
cm->buffer_removal_times[op_num] = 0;
}
}
}
}
if (current_frame->frame_type == KEY_FRAME) {
if (!cm->show_frame) { // unshown keyframe (forward keyframe)
current_frame->refresh_frame_flags = aom_rb_read_literal(rb, REF_FRAMES);
} else { // shown keyframe
current_frame->refresh_frame_flags = (1 << REF_FRAMES) - 1;
}
for (int i = 0; i < INTER_REFS_PER_FRAME; ++i) {
cm->remapped_ref_idx[i] = INVALID_IDX;
}
if (pbi->need_resync) {
reset_ref_frame_map(cm);
pbi->need_resync = 0;
}
} else {
if (current_frame->frame_type == INTRA_ONLY_FRAME) {
current_frame->refresh_frame_flags = aom_rb_read_literal(rb, REF_FRAMES);
if (current_frame->refresh_frame_flags == 0xFF) {
aom_internal_error(&pbi->error, AOM_CODEC_UNSUP_BITSTREAM,
"Intra only frames cannot have refresh flags 0xFF");
}
if (pbi->need_resync) {
reset_ref_frame_map(cm);
pbi->need_resync = 0;
}
} else if (pbi->need_resync != 1) { /* Skip if need resync */
current_frame->refresh_frame_flags =
frame_is_sframe(cm) ? 0xFF : aom_rb_read_literal(rb, REF_FRAMES);
}
}
if (!frame_is_intra_only(cm) || current_frame->refresh_frame_flags != 0xFF) {
// Read all ref frame order hints if error_resilient_mode == 1
if (features->error_resilient_mode &&
seq_params->order_hint_info.enable_order_hint) {
for (int ref_idx = 0; ref_idx < REF_FRAMES; ref_idx++) {
// Read order hint from bit stream
unsigned int order_hint = aom_rb_read_literal(
rb, seq_params->order_hint_info.order_hint_bits_minus_1 + 1);
// Get buffer
RefCntBuffer *buf = cm->ref_frame_map[ref_idx];
if (buf == NULL || order_hint != buf->order_hint) {
if (buf != NULL) {
lock_buffer_pool(pool);
decrease_ref_count(buf, pool);
unlock_buffer_pool(pool);
cm->ref_frame_map[ref_idx] = NULL;
}
// If no corresponding buffer exists, allocate a new buffer with all
// pixels set to neutral grey.
int buf_idx = get_free_fb(cm);
if (buf_idx == INVALID_IDX) {
aom_internal_error(&pbi->error, AOM_CODEC_MEM_ERROR,
"Unable to find free frame buffer");
}
buf = &frame_bufs[buf_idx];
lock_buffer_pool(pool);
if (aom_realloc_frame_buffer(
&buf->buf, seq_params->max_frame_width,
seq_params->max_frame_height, seq_params->subsampling_x,
seq_params->subsampling_y, seq_params->use_highbitdepth,
AOM_BORDER_IN_PIXELS, features->byte_alignment,
&buf->raw_frame_buffer, pool->get_fb_cb, pool->cb_priv, false,
0)) {
decrease_ref_count(buf, pool);
unlock_buffer_pool(pool);
aom_internal_error(&pbi->error, AOM_CODEC_MEM_ERROR,
"Failed to allocate frame buffer");
}
unlock_buffer_pool(pool);
// According to the specification, valid bitstreams are required to
// never use missing reference frames so the filling process for
// missing frames is not normatively defined and RefValid for missing
// frames is set to 0.
// To make libaom more robust when the bitstream has been corrupted
// by the loss of some frames of data, this code adds a neutral grey
// buffer in place of missing frames, i.e.
//
set_planes_to_neutral_grey(seq_params, &buf->buf, 0);
//
// and allows the frames to be used for referencing, i.e.
//
pbi->valid_for_referencing[ref_idx] = 1;
//
// Please note such behavior is not normative and other decoders may
// use a different approach.
cm->ref_frame_map[ref_idx] = buf;
buf->order_hint = order_hint;
}
}
}
}
if (current_frame->frame_type == KEY_FRAME) {
setup_frame_size(cm, frame_size_override_flag, rb);
if (features->allow_screen_content_tools && !av1_superres_scaled(cm))
features->allow_intrabc = aom_rb_read_bit(rb);
features->allow_ref_frame_mvs = 0;
cm->prev_frame = NULL;
} else {
features->allow_ref_frame_mvs = 0;
if (current_frame->frame_type == INTRA_ONLY_FRAME) {
cm->cur_frame->film_grain_params_present =
seq_params->film_grain_params_present;
setup_frame_size(cm, frame_size_override_flag, rb);
if (features->allow_screen_content_tools && !av1_superres_scaled(cm))
features->allow_intrabc = aom_rb_read_bit(rb);
} else if (pbi->need_resync != 1) { /* Skip if need resync */
int frame_refs_short_signaling = 0;
// Frame refs short signaling is off when error resilient mode is on.
if (seq_params->order_hint_info.enable_order_hint)
frame_refs_short_signaling = aom_rb_read_bit(rb);
if (frame_refs_short_signaling) {
// == LAST_FRAME ==
const int lst_ref = aom_rb_read_literal(rb, REF_FRAMES_LOG2);
const RefCntBuffer *const lst_buf = cm->ref_frame_map[lst_ref];
// == GOLDEN_FRAME ==
const int gld_ref = aom_rb_read_literal(rb, REF_FRAMES_LOG2);
const RefCntBuffer *const gld_buf = cm->ref_frame_map[gld_ref];
// Most of the time, streams start with a keyframe. In that case,
// ref_frame_map will have been filled in at that point and will not
// contain any NULLs. However, streams are explicitly allowed to start
// with an intra-only frame, so long as they don't then signal a
// reference to a slot that hasn't been set yet. That's what we are
// checking here.
if (lst_buf == NULL)
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Inter frame requests nonexistent reference");
if (gld_buf == NULL)
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Inter frame requests nonexistent reference");
av1_set_frame_refs(cm, cm->remapped_ref_idx, lst_ref, gld_ref);
}
for (int i = 0; i < INTER_REFS_PER_FRAME; ++i) {
int ref = 0;
if (!frame_refs_short_signaling) {
ref = aom_rb_read_literal(rb, REF_FRAMES_LOG2);
// Most of the time, streams start with a keyframe. In that case,
// ref_frame_map will have been filled in at that point and will not
// contain any NULLs. However, streams are explicitly allowed to start
// with an intra-only frame, so long as they don't then signal a
// reference to a slot that hasn't been set yet. That's what we are
// checking here.
if (cm->ref_frame_map[ref] == NULL)
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Inter frame requests nonexistent reference");
cm->remapped_ref_idx[i] = ref;
} else {
ref = cm->remapped_ref_idx[i];
}
// Check valid for referencing
if (pbi->valid_for_referencing[ref] == 0)
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Reference frame not valid for referencing");
cm->ref_frame_sign_bias[LAST_FRAME + i] = 0;
if (seq_params->frame_id_numbers_present_flag) {
int frame_id_length = seq_params->frame_id_length;
int diff_len = seq_params->delta_frame_id_length;
int delta_frame_id_minus_1 = aom_rb_read_literal(rb, diff_len);
int ref_frame_id =
((cm->current_frame_id - (delta_frame_id_minus_1 + 1) +
(1 << frame_id_length)) %
(1 << frame_id_length));
// Compare values derived from delta_frame_id_minus_1 and
// refresh_frame_flags.
if (ref_frame_id != cm->ref_frame_id[ref])
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Reference buffer frame ID mismatch");
}
}
if (!features->error_resilient_mode && frame_size_override_flag) {
setup_frame_size_with_refs(cm, rb);
} else {
setup_frame_size(cm, frame_size_override_flag, rb);
}
if (features->cur_frame_force_integer_mv) {
features->allow_high_precision_mv = 0;
} else {
features->allow_high_precision_mv = aom_rb_read_bit(rb);
}
features->interp_filter = read_frame_interp_filter(rb);
features->switchable_motion_mode = aom_rb_read_bit(rb);
}
cm->prev_frame = get_primary_ref_frame_buf(cm);
if (features->primary_ref_frame != PRIMARY_REF_NONE &&
get_primary_ref_frame_buf(cm) == NULL) {
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Reference frame containing this frame's initial "
"frame context is unavailable.");
}
if (!(current_frame->frame_type == INTRA_ONLY_FRAME) &&
pbi->need_resync != 1) {
if (frame_might_allow_ref_frame_mvs(cm))
features->allow_ref_frame_mvs = aom_rb_read_bit(rb);
else
features->allow_ref_frame_mvs = 0;
for (int i = LAST_FRAME; i <= ALTREF_FRAME; ++i) {
const RefCntBuffer *const ref_buf = get_ref_frame_buf(cm, i);
struct scale_factors *const ref_scale_factors =
get_ref_scale_factors(cm, i);
av1_setup_scale_factors_for_frame(
ref_scale_factors, ref_buf->buf.y_crop_width,
ref_buf->buf.y_crop_height, cm->width, cm->height);
if ((!av1_is_valid_scale(ref_scale_factors)))
aom_internal_error(&pbi->error, AOM_CODEC_UNSUP_BITSTREAM,
"Reference frame has invalid dimensions");
}
}
}
av1_setup_frame_buf_refs(cm);
av1_setup_frame_sign_bias(cm);
cm->cur_frame->frame_type = current_frame->frame_type;
update_ref_frame_id(pbi);
const int might_bwd_adapt = !(seq_params->reduced_still_picture_hdr) &&
!(features->disable_cdf_update);
if (might_bwd_adapt) {
features->refresh_frame_context = aom_rb_read_bit(rb)
? REFRESH_FRAME_CONTEXT_DISABLED
: REFRESH_FRAME_CONTEXT_BACKWARD;
} else {
features->refresh_frame_context = REFRESH_FRAME_CONTEXT_DISABLED;
}
cm->cur_frame->buf.bit_depth = seq_params->bit_depth;
cm->cur_frame->buf.color_primaries = seq_params->color_primaries;
cm->cur_frame->buf.transfer_characteristics =
seq_params->transfer_characteristics;
cm->cur_frame->buf.matrix_coefficients = seq_params->matrix_coefficients;
cm->cur_frame->buf.monochrome = seq_params->monochrome;
cm->cur_frame->buf.chroma_sample_position =
seq_params->chroma_sample_position;
cm->cur_frame->buf.color_range = seq_params->color_range;
cm->cur_frame->buf.render_width = cm->render_width;
cm->cur_frame->buf.render_height = cm->render_height;
if (pbi->need_resync) {
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Keyframe / intra-only frame required to reset decoder"
" state");
}
if (features->allow_intrabc) {
// Set parameters corresponding to no filtering.
struct loopfilter *lf = &cm->lf;
lf->filter_level[0] = 0;
lf->filter_level[1] = 0;
cm->cdef_info.cdef_bits = 0;
cm->cdef_info.cdef_strengths[0] = 0;
cm->cdef_info.nb_cdef_strengths = 1;
cm->cdef_info.cdef_uv_strengths[0] = 0;
cm->rst_info[0].frame_restoration_type = RESTORE_NONE;
cm->rst_info[1].frame_restoration_type = RESTORE_NONE;
cm->rst_info[2].frame_restoration_type = RESTORE_NONE;
}
read_tile_info(pbi, rb);
if (!av1_is_min_tile_width_satisfied(cm)) {
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Minimum tile width requirement not satisfied");
}
CommonQuantParams *const quant_params = &cm->quant_params;
setup_quantization(quant_params, av1_num_planes(cm),
cm->seq_params->separate_uv_delta_q, rb);
xd->bd = (int)seq_params->bit_depth;
CommonContexts *const above_contexts = &cm->above_contexts;
if (above_contexts->num_planes < av1_num_planes(cm) ||
above_contexts->num_mi_cols < cm->mi_params.mi_cols ||
above_contexts->num_tile_rows < cm->tiles.rows) {
av1_free_above_context_buffers(above_contexts);
if (av1_alloc_above_context_buffers(above_contexts, cm->tiles.rows,
cm->mi_params.mi_cols,
av1_num_planes(cm))) {
aom_internal_error(&pbi->error, AOM_CODEC_MEM_ERROR,
"Failed to allocate context buffers");
}
}
if (features->primary_ref_frame == PRIMARY_REF_NONE) {
av1_setup_past_independence(cm);
}
setup_segmentation(cm, rb);
cm->delta_q_info.delta_q_res = 1;
cm->delta_q_info.delta_lf_res = 1;
cm->delta_q_info.delta_lf_present_flag = 0;
cm->delta_q_info.delta_lf_multi = 0;
cm->delta_q_info.delta_q_present_flag =
quant_params->base_qindex > 0 ? aom_rb_read_bit(rb) : 0;
if (cm->delta_q_info.delta_q_present_flag) {
xd->current_base_qindex = quant_params->base_qindex;
cm->delta_q_info.delta_q_res = 1 << aom_rb_read_literal(rb, 2);
if (!features->allow_intrabc)
cm->delta_q_info.delta_lf_present_flag = aom_rb_read_bit(rb);
if (cm->delta_q_info.delta_lf_present_flag) {
cm->delta_q_info.delta_lf_res = 1 << aom_rb_read_literal(rb, 2);
cm->delta_q_info.delta_lf_multi = aom_rb_read_bit(rb);
av1_reset_loop_filter_delta(xd, av1_num_planes(cm));
}
}
xd->cur_frame_force_integer_mv = features->cur_frame_force_integer_mv;
for (int i = 0; i < MAX_SEGMENTS; ++i) {
const int qindex = av1_get_qindex(&cm->seg, i, quant_params->base_qindex);
xd->lossless[i] =
qindex == 0 && quant_params->y_dc_delta_q == 0 &&
quant_params->u_dc_delta_q == 0 && quant_params->u_ac_delta_q == 0 &&
quant_params->v_dc_delta_q == 0 && quant_params->v_ac_delta_q == 0;
xd->qindex[i] = qindex;
}
features->coded_lossless = is_coded_lossless(cm, xd);
features->all_lossless = features->coded_lossless && !av1_superres_scaled(cm);
setup_segmentation_dequant(cm, xd);
if (features->coded_lossless) {
cm->lf.filter_level[0] = 0;
cm->lf.filter_level[1] = 0;
}
if (features->coded_lossless || !seq_params->enable_cdef) {
cm->cdef_info.cdef_bits = 0;
cm->cdef_info.cdef_strengths[0] = 0;
cm->cdef_info.cdef_uv_strengths[0] = 0;
}
if (features->all_lossless || !seq_params->enable_restoration) {
cm->rst_info[0].frame_restoration_type = RESTORE_NONE;
cm->rst_info[1].frame_restoration_type = RESTORE_NONE;
cm->rst_info[2].frame_restoration_type = RESTORE_NONE;
}
setup_loopfilter(cm, rb);
if (!features->coded_lossless && seq_params->enable_cdef) {
setup_cdef(cm, rb);
}
if (!features->all_lossless && seq_params->enable_restoration) {
decode_restoration_mode(cm, rb);
}
features->tx_mode = read_tx_mode(rb, features->coded_lossless);
current_frame->reference_mode = read_frame_reference_mode(cm, rb);
av1_setup_skip_mode_allowed(cm);
current_frame->skip_mode_info.skip_mode_flag =
current_frame->skip_mode_info.skip_mode_allowed ? aom_rb_read_bit(rb) : 0;
if (frame_might_allow_warped_motion(cm))
features->allow_warped_motion = aom_rb_read_bit(rb);
else
features->allow_warped_motion = 0;
features->reduced_tx_set_used = aom_rb_read_bit(rb);
if (features->allow_ref_frame_mvs && !frame_might_allow_ref_frame_mvs(cm)) {
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Frame wrongly requests reference frame MVs");
}
if (!frame_is_intra_only(cm)) read_global_motion(cm, rb);
cm->cur_frame->film_grain_params_present =
seq_params->film_grain_params_present;
read_film_grain(cm, rb);
#if EXT_TILE_DEBUG
if (pbi->ext_tile_debug && cm->tiles.large_scale) {
read_ext_tile_info(pbi, rb);
av1_set_single_tile_decoding_mode(cm);
}
#endif // EXT_TILE_DEBUG
return 0;
}
struct aom_read_bit_buffer *av1_init_read_bit_buffer(
AV1Decoder *pbi, struct aom_read_bit_buffer *rb, const uint8_t *data,
const uint8_t *data_end) {
rb->bit_offset = 0;
rb->error_handler = error_handler;
rb->error_handler_data = &pbi->common;
rb->bit_buffer = data;
rb->bit_buffer_end = data_end;
return rb;
}
BITSTREAM_PROFILE av1_read_profile(struct aom_read_bit_buffer *rb) {
int profile = aom_rb_read_literal(rb, PROFILE_BITS);
return (BITSTREAM_PROFILE)profile;
}
static inline void superres_post_decode(AV1Decoder *pbi) {
AV1_COMMON *const cm = &pbi->common;
BufferPool *const pool = cm->buffer_pool;
if (!av1_superres_scaled(cm)) return;
assert(!cm->features.all_lossless);
av1_superres_upscale(cm, pool, 0);
}
uint32_t av1_decode_frame_headers_and_setup(AV1Decoder *pbi,
struct aom_read_bit_buffer *rb,
int trailing_bits_present) {
AV1_COMMON *const cm = &pbi->common;
const int num_planes = av1_num_planes(cm);
MACROBLOCKD *const xd = &pbi->dcb.xd;
#if CONFIG_BITSTREAM_DEBUG
if (cm->seq_params->order_hint_info.enable_order_hint) {
aom_bitstream_queue_set_frame_read(cm->current_frame.order_hint * 2 +
cm->show_frame);
} else {
// This is currently used in RTC encoding. cm->show_frame is always 1.
assert(cm->show_frame);
aom_bitstream_queue_set_frame_read(cm->current_frame.frame_number);
}
#endif
#if CONFIG_MISMATCH_DEBUG
mismatch_move_frame_idx_r();
#endif
for (int i = LAST_FRAME; i <= ALTREF_FRAME; ++i) {
cm->global_motion[i] = default_warp_params;
cm->cur_frame->global_motion[i] = default_warp_params;
}
xd->global_motion = cm->global_motion;
read_uncompressed_header(pbi, rb);
if (trailing_bits_present) av1_check_trailing_bits(pbi, rb);
if (!cm->tiles.single_tile_decoding &&
(pbi->dec_tile_row >= 0 || pbi->dec_tile_col >= 0)) {
pbi->dec_tile_row = -1;
pbi->dec_tile_col = -1;
}
const uint32_t uncomp_hdr_size =
(uint32_t)aom_rb_bytes_read(rb); // Size of the uncompressed header
YV12_BUFFER_CONFIG *new_fb = &cm->cur_frame->buf;
xd->cur_buf = new_fb;
if (av1_allow_intrabc(cm)) {
av1_setup_scale_factors_for_frame(
&cm->sf_identity, xd->cur_buf->y_crop_width, xd->cur_buf->y_crop_height,
xd->cur_buf->y_crop_width, xd->cur_buf->y_crop_height);
}
// Showing a frame directly.
if (cm->show_existing_frame) {
if (pbi->reset_decoder_state) {
// Use the default frame context values.
*cm->fc = *cm->default_frame_context;
if (!cm->fc->initialized)
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Uninitialized entropy context.");
}
return uncomp_hdr_size;
}
cm->mi_params.setup_mi(&cm->mi_params);
av1_calculate_ref_frame_side(cm);
if (cm->features.allow_ref_frame_mvs) av1_setup_motion_field(cm);
av1_setup_block_planes(xd, cm->seq_params->subsampling_x,
cm->seq_params->subsampling_y, num_planes);
if (cm->features.primary_ref_frame == PRIMARY_REF_NONE) {
// use the default frame context values
*cm->fc = *cm->default_frame_context;
} else {
*cm->fc = get_primary_ref_frame_buf(cm)->frame_context;
}
if (!cm->fc->initialized)
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Uninitialized entropy context.");
pbi->dcb.corrupted = 0;
return uncomp_hdr_size;
}
// Once-per-frame initialization
static inline void setup_frame_info(AV1Decoder *pbi) {
AV1_COMMON *const cm = &pbi->common;
if (cm->rst_info[0].frame_restoration_type != RESTORE_NONE ||
cm->rst_info[1].frame_restoration_type != RESTORE_NONE ||
cm->rst_info[2].frame_restoration_type != RESTORE_NONE) {
av1_alloc_restoration_buffers(cm, /*is_sgr_enabled =*/true);
for (int p = 0; p < av1_num_planes(cm); p++) {
av1_alloc_restoration_struct(cm, &cm->rst_info[p], p > 0);
}
}
const int use_highbd = cm->seq_params->use_highbitdepth;
const int buf_size = MC_TEMP_BUF_PELS << use_highbd;
if (pbi->td.mc_buf_size != buf_size) {
av1_free_mc_tmp_buf(&pbi->td);
allocate_mc_tmp_buf(cm, &pbi->td, buf_size, use_highbd);
}
}
void av1_decode_tg_tiles_and_wrapup(AV1Decoder *pbi, const uint8_t *data,
const uint8_t *data_end,
const uint8_t **p_data_end, int start_tile,
int end_tile, int initialize_flag) {
AV1_COMMON *const cm = &pbi->common;
CommonTileParams *const tiles = &cm->tiles;
MACROBLOCKD *const xd = &pbi->dcb.xd;
const int tile_count_tg = end_tile - start_tile + 1;
xd->error_info = cm->error;
if (initialize_flag) setup_frame_info(pbi);
const int num_planes = av1_num_planes(cm);
if (pbi->max_threads > 1 && !(tiles->large_scale && !pbi->ext_tile_debug) &&
pbi->row_mt)
*p_data_end =
decode_tiles_row_mt(pbi, data, data_end, start_tile, end_tile);
else if (pbi->max_threads > 1 && tile_count_tg > 1 &&
!(tiles->large_scale && !pbi->ext_tile_debug))
*p_data_end = decode_tiles_mt(pbi, data, data_end, start_tile, end_tile);
else
*p_data_end = decode_tiles(pbi, data, data_end, start_tile, end_tile);
// If the bit stream is monochrome, set the U and V buffers to a constant.
if (num_planes < 3) {
set_planes_to_neutral_grey(cm->seq_params, xd->cur_buf, 1);
}
if (end_tile != tiles->rows * tiles->cols - 1) {
return;
}
av1_alloc_cdef_buffers(cm, &pbi->cdef_worker, &pbi->cdef_sync,
pbi->num_workers, 1);
av1_alloc_cdef_sync(cm, &pbi->cdef_sync, pbi->num_workers);
if (!cm->features.allow_intrabc && !tiles->single_tile_decoding) {
if (cm->lf.filter_level[0] || cm->lf.filter_level[1]) {
av1_loop_filter_frame_mt(&cm->cur_frame->buf, cm, &pbi->dcb.xd, 0,
num_planes, 0, pbi->tile_workers,
pbi->num_workers, &pbi->lf_row_sync, 0);
}
const int do_cdef =
!pbi->skip_loop_filter && !cm->features.coded_lossless &&
(cm->cdef_info.cdef_bits || cm->cdef_info.cdef_strengths[0] ||
cm->cdef_info.cdef_uv_strengths[0]);
const int do_superres = av1_superres_scaled(cm);
const int optimized_loop_restoration = !do_cdef && !do_superres;
const int do_loop_restoration =
cm->rst_info[0].frame_restoration_type != RESTORE_NONE ||
cm->rst_info[1].frame_restoration_type != RESTORE_NONE ||
cm->rst_info[2].frame_restoration_type != RESTORE_NONE;
// Frame border extension is not required in the decoder
// as it happens in extend_mc_border().
int do_extend_border_mt = 0;
if (!optimized_loop_restoration) {
if (do_loop_restoration)
av1_loop_restoration_save_boundary_lines(&pbi->common.cur_frame->buf,
cm, 0);
if (do_cdef) {
if (pbi->num_workers > 1) {
av1_cdef_frame_mt(cm, &pbi->dcb.xd, pbi->cdef_worker,
pbi->tile_workers, &pbi->cdef_sync,
pbi->num_workers, av1_cdef_init_fb_row_mt,
do_extend_border_mt);
} else {
av1_cdef_frame(&pbi->common.cur_frame->buf, cm, &pbi->dcb.xd,
av1_cdef_init_fb_row);
}
}
superres_post_decode(pbi);
if (do_loop_restoration) {
av1_loop_restoration_save_boundary_lines(&pbi->common.cur_frame->buf,
cm, 1);
if (pbi->num_workers > 1) {
av1_loop_restoration_filter_frame_mt(
(YV12_BUFFER_CONFIG *)xd->cur_buf, cm, optimized_loop_restoration,
pbi->tile_workers, pbi->num_workers, &pbi->lr_row_sync,
&pbi->lr_ctxt, do_extend_border_mt);
} else {
av1_loop_restoration_filter_frame((YV12_BUFFER_CONFIG *)xd->cur_buf,
cm, optimized_loop_restoration,
&pbi->lr_ctxt);
}
}
} else {
// In no cdef and no superres case. Provide an optimized version of
// loop_restoration_filter.
if (do_loop_restoration) {
if (pbi->num_workers > 1) {
av1_loop_restoration_filter_frame_mt(
(YV12_BUFFER_CONFIG *)xd->cur_buf, cm, optimized_loop_restoration,
pbi->tile_workers, pbi->num_workers, &pbi->lr_row_sync,
&pbi->lr_ctxt, do_extend_border_mt);
} else {
av1_loop_restoration_filter_frame((YV12_BUFFER_CONFIG *)xd->cur_buf,
cm, optimized_loop_restoration,
&pbi->lr_ctxt);
}
}
}
}
if (!pbi->dcb.corrupted) {
if (cm->features.refresh_frame_context == REFRESH_FRAME_CONTEXT_BACKWARD) {
assert(pbi->context_update_tile_id < pbi->allocated_tiles);
*cm->fc = pbi->tile_data[pbi->context_update_tile_id].tctx;
av1_reset_cdf_symbol_counters(cm->fc);
}
} else {
aom_internal_error(&pbi->error, AOM_CODEC_CORRUPT_FRAME,
"Decode failed. Frame data is corrupted.");
}
#if CONFIG_INSPECTION
if (pbi->inspect_cb != NULL) {
(*pbi->inspect_cb)(pbi, pbi->inspect_ctx);
}
#endif
// Non frame parallel update frame context here.
if (!tiles->large_scale) {
cm->cur_frame->frame_context = *cm->fc;
}
if (cm->show_frame && !cm->seq_params->order_hint_info.enable_order_hint) {
++cm->current_frame.frame_number;
}
}